Tablet computer having a display screen and an auxiliary touch screen

• US 10,254,790 B2
• Filed: 07/20/2015
• Issued: 04/09/2019
• Est. Priority Date: 12/22/2014
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Company Limited
• Original Assignee: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectric Technology Co. Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: Zhang, Shancai
• Primary Examiner(s): Landis, Lisa S
• Application Number:
  US14/803,379
• Publication Number:
  US 20160179287A1
• Time in Patent Office: 1,359 Days
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1647 including at least an additional display G06F1/1692 takes precedence
• CPC Class Codes: G06F 1/1692 the I/O peripheral being a secondary touch screen used as control interface, e.g. virtual buttons or sliders

Abstract

The present invention relates to a tablet computer including a front surface and a back surface arranged opposite to each other. A display screen is disposed on the front surface, and at least one auxiliary touch screen is disposed on the back surface. When performing a touch operation through the auxiliary touch screen, hands performing the touch operation can still hold the tablet computer. Therefore, the tablet computer can be hold firmly, the hands and arms can hardly fatigue. Meanwhile, the display screen will not be covered when performing touch operation through the auxiliary touch screen. The probability of mistake touch and mistake operation are reduced. Furthermore, when the touch display screen cannot identify a touch action, the user can perform touch operation through the auxiliary touch screen. Therefore, the case in which the tablet computer cannot be used due to identify failure of the touch display screen is avoided.

Claims

1. A tablet computer, including a front surface and a back surface arranged opposite to each other, wherein, a display screen is disposed on the front surface of the tablet computer, and at least three auxiliary touch screens are disposed on the back surface of the tablet computer, each of the auxiliary touch screens being at a corresponding one side of the back surface,

wherein each auxiliary touch screen has a size less than that of the display screen and a length-width ratio consistent with that of the display screen, such that respective areas of the auxiliary touch screen are in one-to-one correspondence with respective areas of the display screen, and

wherein the tablet computer further comprises a control switch configured to control at most two of the at least three auxiliary touch screens to be in an on state simultaneously.

2. The tablet computer of claim 1, wherein, the display screen is a touch display screen.

3. The tablet computer of claim 2, wherein, the tablet computer further includes a touch control chip, and both the touch display screen and the auxiliary touch screen identify a touch position and a touch action under the control of the touch control chip.

4. The tablet computer of claim 1, wherein, the number of the at least one auxiliary touch screen is multiple, and at least the opposite sides of the back surface of the tablet computer are provided with the auxiliary touch screens thereon.

5. The tablet computer of claim 4, wherein, the auxiliary screens are disposed on each side of the back surface of the tablet computer.

6. The tablet computer of claim 1, wherein, the control switch is configured to control on-off of each auxiliary touch screen.

7. The tablet computer of claim 4, wherein, the control switch is configured to control on-off of each auxiliary touch screen.

8. The tablet computer of claim 5, wherein, the control switch is configured to control on-off of each auxiliary touch screen.

9. The tablet computer of claim 6, wherein, the control switch is disposed on a side surface of the tablet computer, and the side surface is connected between the front surface and back surface.

10. The tablet computer of claim 7, wherein, the control switch is disposed on a side surface of the tablet computer, and the side surface is connected between the front surface and back surface.

11. The tablet computer of claim 8, wherein, the control switch is disposed on a side surface of the tablet computer, and the side surface is connected between the front surface and back surface.

12. The tablet computer of claim 1, wherein, when two auxiliary touch screens are in the on state simultaneously under the control of the control switch, the two touch screens controlled by the control switch to be in the on state simultaneously are the auxiliary touch screens located on two opposite sides of the back surface of the table computer.

13. The tablet computer of claim 7, wherein, when two auxiliary touch screens are in the on state simultaneously under the control of the control switch, the two touch screens controlled by the control switch to be in the on state simultaneously are the auxiliary touch screens located on two opposite sides of the back surface of the table computer.

14. The tablet computer of claim 8, wherein, when two auxiliary touch screens are in the on state simultaneously under the control of the control switch, the two touch screens controlled by the control switch to be in the on state simultaneously are the auxiliary touch screens located on two opposite sides of the back surface of the table computer.

15. The tablet computer of claim 1, wherein, a recess is disposed on the back surface of the tablet computer, and the auxiliary screen is disposed in the recess.

16. The tablet computer of claim 1, wherein at least two adjacent sides of the back surface of the tablet computer are provided with the auxiliary touch screens thereon.

17. The tablet computer of claim 1, wherein, the auxiliary screens are disposed on each side of the back surface of the tablet computer.