News Column

Researchers Submit Patent Application, "Display Module and Electronic Terminal", for Approval

June 19, 2014



By a News Reporter-Staff News Editor at Computer Weekly News -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors Wang, Zhuqiang (Beijing, CN); Shao, Xiang (Beijing, CN), filed on June 27, 2012, was made available online on June 5, 2014.

The patent's assignee is Beijing Lenovo Software Ltd.

News editors obtained the following quote from the background information supplied by the inventors: "To enable a user to view a display from more than one view angle, display manufacturers have developed a double-sided display. That is, two one-sided display screens are combined in a back-to-back manner, such that different images can be displayed on the two opposite sides. Further, to use such display in a more convenient way, a touch sensing layer can be provided on each side of the double-sided display screen to enable touch function on each of the screens.

"For a traditional touch screen, the touch sensing layer is typically provided on a surface of the screen. For a double-sided display, a touch sensing layer is required on each of the display screens. Due to the configuration of two display units and two touch sensing layers of the double-sided display, it is difficult to manufacture a thin and light display with good appearance and low cost."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "It is an object of the present invention to provide a display module and an electronic terminal, capable of reducing overall thickness of a display having two layers of touch screens while making the display slimmer and more beautiful.

"According to an aspect of the present invention, a display module is provided. The display module comprises: a first display unit configured to display first image information in a first direction; a second display unit configured to display second image information in a second direction; and a sensor unit provided between the first display unit and the second display unit and configured to sense an object's approach or touch on the first display unit and/or the second display unit.

"Preferably, the display module further comprises: a light emitting unit configured to emit light towards a first area; and a light guiding unit provided in the first area and configured to guide the light emitted from the light emitting unit to a second area corresponding to the first direction and a third area corresponding to the second direction. The first display unit is provided in the second area and configured to display the first image information with the light guided to the second area by the light guiding unit. The second display unit is provided in the third area and configured to display the second image information with the light guided to the third area by the light guiding unit.

"Preferably, the light guiding unit comprises a light guiding plate. The first display unit is provided on a first side of the light guiding plate towards the first direction and the second display unit is provided on a second side of the light guiding plate towards the second direction. The light emitting unit is provided at an end surface of the light guiding plate that is different from the first side and the second side.

"Preferably, the sensor unit is provided between the light guiding unit and the first display unit, or between the light guiding unit and the second display unit.

"Preferably, the display module comprises a first material layer provided on a first surface of the light guiding plate towards the first direction, and having a light transmittance higher than a predetermined light transmittance in a power on state and a light transmittance lower than the predetermined light transmittance in a power off state; and a second material layer provided on a second surface of the light guiding plate that faces towards the second direction, and having a light transmittance higher than a predetermined light transmittance in a power on state and a light transmittance lower than the predetermined light transmittance in a power off state.

"Preferably, the display module comprises an adjusting unit configured to control the power on state and the power off state of each of the first material layer and the second material layer. The adjusting unit is configured to control, in response to a first control command, the first material layer to enter the power on state, the second material layer to enter the power off state and the light guiding plate to guide the light emitted from the light emitting unit to the second area, and to control, in response to a second control command, the second material layer to enter the power on state, the first material layer to enter the power off state and the light guiding plate to guide the light emitted from the light emitting unit to the third area.

"Preferably, the light guiding unit comprises a first light guiding plate and a second light guiding plate. A distance between the first light guiding plate and the first display unit is shorter than a distance between the second light guiding plate and the first display unit. A distance between the second light guiding plate and the second display unit is shorter than a distance between the first light guiding plate and the second display unit. The first light guiding plate is configured to guide the light emitted from the light emitting unit to the second area, and the second light guiding plate is configured to guide the light emitted from the light emitting unit to the third area. The light emitting unit is provided at an end surface of the first light guiding plate or the second light guiding plate.

"Preferably, the sensor unit is provided between the first light guiding plate and the second light guiding plate.

"Preferably, the display module comprises a moving mechanism connected to the light emitting unit and configured to cause the light emitting unit to move. The moving mechanism causes the light emitting unit to move to the first light guiding plate in response to a third control command and causes the light emitting unit to move to the second light guiding plate in response to a fourth control command.

"According to another aspect of the present invention, an electronic terminal is provided. The electronic terminal comprises: a host comprising at least one processing unit; a display comprising: a first display unit configured to display first image information in a first direction upon receiving a first data from a first processing unit of the at least one processing unit; a second display unit configured to display second image information in a second direction upon receiving a second data from a second processing unit of the at least one processing unit; and a sensor unit provided between the first display unit and the second display unit and configured to obtain operation data for an object's approach or touch on the first display unit and/or the second display unit and transmit the operation data to a third processing unit of the at least one processing unit.

"Preferably, the display further comprises: a light emitting unit configured to emit light towards a first area; and a light guiding unit provided in the first area and configured to guide the light emitted from the light emitting unit to a second area corresponding to the first direction and a third area corresponding to the second direction. The first display unit is provided in the second area and configured to display the first image information with the light guided to the second area by the light guiding unit. The second display unit is provided in the third area and configured to display the second image information with the light guided to the third area by the light guiding unit.

"Preferably, in the electronic terminal, the light guiding unit comprises a light guiding plate. The first display unit is provided on a first side of the light guiding plate towards the first direction and the second display unit is provided on a second side of the light guiding plate towards the second direction. The light emitting unit is provided at an end surface of the light guiding plate that is different from the first side and the second side.

"Preferably, in the electronic terminal, the sensor unit is provided between the light guiding unit and the first display unit, or between the light guiding unit and the second display unit.

"Preferably, in the electronic terminal, the host is configured to execute a first operating system and/or a second operating system. When the host executes the first operating system, the first display unit is configured to display an operation result of the first operating system in the first direction. When the host executes the second operating system, the second display unit is configured to display an operation result of the second operating system in the second direction.

"Preferably, in the electronic terminal, when the host executes the first operating system, the sensor unit is configured to sense the object's approach or touch on the first display unit, and the first operating system responds to the object's approach or touch. When the host executes the second operating system, the sensor unit is configured to sense the object's approach or touch on the second display unit, and the second operating system responds to the object's approach or touch.

"Preferably, the electronic terminal further comprises a connecting unit configured to connect the host with the display, wherein the display has a first relative position relationship with the host when the connecting unit is in a first connection state or a second relative position relationship with the host when the connecting unit is in a second connection state; a detecting unit configured to detect the relative position relationship between the host and the display and generate a first detection result upon detecting the first relative position relationship or a second detection result upon detecting the second relative position relationship; and a fourth processing unit in the at least one processing unit, connected to the detecting unit and configured to switch the electronic terminal to a first operation state based on the first detection result or a second operation state based on the second detection result. The first operation state is an operation state in which the first operating system is a primary operating system and the first display unit displays the operation result of the first operating system and the second operation state is an operation state in which the second operating system is the primary operating system and the second display unit displays the operation result of the second operating system.

"Embodiments of the present invention have at least one of the following advantageous effects. The object's approach or touch on the first display unit and the second display unit can be sensed by a single sensor unit. There is no need to provide a sensor unit for each of the display units for the touch sensing function. In this way, it is possible to reduce the thickness of the display module, and thus make it slimmer and more beautiful while reducing its manufacture cost. Further, with two display units, the electronic terminal can be switched between a first operation state in which the first operating system is the primary operating system and a second operation state in which the second operating system is the primary operating system. Therefore, the terminal can be switched between different states seamlessly.

BRIEF DESCRIPTION OF THE DRAWINGS

"FIG. 1 is a schematic diagram of a first configuration of a display module according to a first embodiment of the present invention;

"FIG. 2 is a schematic diagram of a second configuration of the display module according to the first embodiment of the present invention;

"FIG. 3 is a schematic diagram of configuration of a display module according to a second embodiment of the present invention;

"FIG. 4 is a schematic diagram showing a position relationship between each of first and second light guiding plates and a light emitting unit in the display module according to the second embodiment of the present invention; and

"FIG. 5 is a schematic diagram of configuration of an electronic device according to an embodiment of the present invention."

For additional information on this patent application, see: Wang, Zhuqiang; Shao, Xiang. Display Module and Electronic Terminal. Filed June 27, 2012 and posted June 5, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=3905&p=79&f=G&l=50&d=PG01&S1=20140529.PD.&OS=PD/20140529&RS=PD/20140529

Keywords for this news article include: Beijing Lenovo Software Ltd..

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Source: Computer Weekly News


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