Dual-screen device and dual-screen picture alignment method

Abstract

The present invention discloses a dual-screen device and a dual-screen image alignment method. The dual-screen device includes a first panel, a second panel and a display driving circuit. The first panel and the second panel are assembled by hinge connection. The display driving circuit couples the first panel and the second panel. The display driving circuit includes a memory. When the display driving circuit receives an image to be displayed, the memory stores the image to be displayed. During N first periods when a data enable signal is activated, the display driving circuit correspondingly outputs N display data in the image to be displayed stored in the memory in sequence, where N is a positive integer. The display driving circuit also includes a compensation circuit. During at least one second period when a compensation data enable signal is activated, the compensation circuit correspondingly outputs at least one compensation data.

Description

Technical Field

[0001] The present invention relates to a display, and more particularly to a dual-screen device and a method for aligning dual-screen images. Background Art

[0002] With the continuous development of display functions, there are currently many mobile phones with a dual-screen design on the market. The two screens are assembled through a hinge connection to achieve the function of dual-screen folding.

[0003] Ideally, when the dual-screen mobile phone is opened from the folded state, the display images of the two screens will be aligned with each other at the upper and lower edges to provide a good visual experience for the user. However, once there is a tolerance in the hinge, it is very likely that the display images of the two screens cannot be successfully aligned, which affects mass production.

[0004] Traditionally, pixel registration can be used to improve this phenomenon. As Figure 1 shown, when the dual-screen mobile phone is opened from the folded state, if the position of the second image B displayed on the second panel P2 is slightly higher than the position of the first image A displayed on the first panel P1, the second image B displayed on the second panel P2 can be moved down to align with the first image A displayed on the first panel P1, and the second panel P2 can be set in a one-time programmable (OTP) manner.

[0005] Similarly, as Figure 2 shown, if the position of the second image B displayed on the second panel P2 is slightly lower than the position of the first image A displayed on the first panel P1, the second image B displayed on the second panel P2 is moved up to align with the first image A displayed on the first panel P1, and the second panel P2 is set in a one-time programmable (OTP) manner.

[0006] Figures 3 to 5 are schematic diagrams of several different ways to adjust the screen display image in the prior art.

[0007] As Figure 3 shown, since the system-side AP needs to transmit the data to be displayed (including the first image A and the black area) that is the same size as the display image of the first panel P1 to the display driver integrated circuit (DDIC), it needs to occupy a relatively large space in the memory RAM of the display driver integrated circuit (DDIC). Assuming that the capacity of the memory RAM is 1080x2520 and the size of the first image A is 1080x2400, once the number of black areas in the display image of the first panel P1 exceeds 120, it cannot be stored in the memory RAM, and the system-side AP also needs to cooperate with the adjustment, so it will cause waste of the memory RAM capacity and the system-side AP resources, which urgently needs to be improved.

[0008] As Figure 4 shown, assume that the VESA compressed data is transmitted from the system-side AP to the display driver integrated circuit (DDIC), so that the data stored in the memory RAM of the DDIC includes uncompressed areas and compressed areas and cannot be processed, resulting in an error in the image displayed on the first panel P1, which urgently needs to be improved.

[0009] As Figure 5 shown, actually, the position of the first image A displayed on the first panel P1 can also be moved by adjusting the position of the gate start pulse (GSP). However, when performing de-mura compensation, since the de-mura compensation starts from the first line of the first panel P1, but the first line of the moved first image A does not start from the first line of the first panel P1, a phenomenon of incorrect de-mura compensation position occurs, which urgently needs to be improved. SUMMARY OF THE INVENTION

[0010] Therefore, the present invention provides a dual-screen device and a dual-screen image alignment method to solve the above problems encountered in the prior art.

[0011] According to a preferred specific embodiment of the present invention, there is provided a dual-screen device. In this embodiment, the dual-screen device includes a first panel, a second panel, and a display driver circuit. The first panel and the second panel are assembled by being connected through a hinge. The display driver circuit is coupled to the first panel and the second panel. The display driver circuit includes a memory. When the display driver circuit receives an image to be displayed, the memory stores the image to be displayed. During N first periods started by a data enable signal (DE), the display driver circuit sequentially outputs N display data in the image to be displayed stored in the memory correspondingly, where N is a positive integer. The display driver circuit further includes a compensation circuit. During at least one second period started by a compensation data enable signal (CDE), the compensation circuit outputs at least one compensation data correspondingly.

[0012] In one embodiment, the compensation circuit includes: a compensation control setting unit for setting according to the compensation data enable signal; a vertical counting unit coupled to the compensation control setting unit for vertically counting display lines; a horizontal counting unit coupled to the compensation control setting unit and the vertical counting unit respectively for horizontally counting display lines; and a compensation data control unit coupled to the compensation control setting unit, the vertical counting unit, and the horizontal counting unit respectively for outputting the at least one compensation data correspondingly during the at least one second period started by the compensation data enable signal.

[0013] In one embodiment, the at least one second period is earlier than and / or later than the N first periods.

[0014] In one embodiment, the compensation data is black.

[0015] In one embodiment, the dual-screen device further includes a system side, coupled to the display driving circuit, for providing an image to be displayed to the display driving circuit and storing it in the memory.

[0016] In one embodiment, the first screen displayed on the first panel includes the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data. The first screen is aligned with the second screen displayed on the second panel.

[0017] In one embodiment, the second screen displayed on the second panel includes the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data. The second screen is aligned with the first screen displayed on the first panel.

[0018] Another preferred specific embodiment according to the present invention is a method for aligning dual-screen images. The method for aligning dual-screen images is applied to a dual-screen device. The dual-screen device includes a first panel, a second panel, and a display driving circuit. The first panel and the second panel are assembled by being connected with a hinge. The display driving circuit includes a memory and a compensation circuit. The method for aligning dual-screen images includes the following steps: (a) When the display driving circuit receives an image to be displayed, storing the image to be displayed in the memory; (b) During N first periods when a data enabling signal is activated, the display driving circuit sequentially outputs N display data in the image to be displayed stored in the memory correspondingly; and (c) During at least one second period when a compensation data enabling signal is activated, the compensation circuit outputs at least one compensation data correspondingly.

[0019] In one embodiment, the compensation circuit includes a compensation control setting unit, a vertical counting unit, a horizontal counting unit, and a compensation data control unit. The compensation control setting unit makes settings according to the compensation data enabling signal. The vertical counting unit vertically counts display lines. The horizontal counting unit horizontally counts display lines. The compensation data control unit outputs the at least one compensation data correspondingly during the at least one second period when the compensation data enabling signal is activated.

[0020] In one embodiment, the at least one second period is earlier than and / or later than the N first periods.

[0021] In one embodiment, the compensation data is black.

[0022] In one embodiment, the dual-screen device further includes a system terminal. The system terminal provides the image to be displayed to the display driving circuit and stores it in the memory.

[0023] In one embodiment, the first screen displayed on the first panel includes the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data. The first screen is aligned with the second screen displayed on the second panel.

[0024] In one embodiment, the second screen displayed on the second panel includes the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data. The second screen is aligned with the first screen displayed on the first panel.

[0025] Compared with the prior art, when the dual-screen device proposed by the present invention is opened from the folded state, the display driving circuit and its compensation circuit can make the first screen and the second screen respectively displayed on the first panel and the second panel connected and assembled by a hinge be aligned with each other, and can also effectively avoid various deficiencies such as waste of memory capacity and system terminal resources, display errors, and Demura compensation errors in the prior art, so as to greatly improve the overall satisfaction of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 and Figure 2 is a schematic diagram of realizing dual-screen alignment by pixel registration in the prior art.

[0027] Figures 3 to 5 are respectively schematic diagrams of several different ways of adjusting the screen display image by the display driving circuit in the prior art.

[0028] Figure 6 is a functional block diagram of the dual-screen device in a specific embodiment of the present invention.

[0029] Figure 7 is a schematic diagram of the dual-screen device of the present invention adjusting the screen display image by the display driving circuit.

[0030] Figure 8 is a schematic diagram of an embodiment of the compensation circuit in the display driving circuit.

[0031] Figure 9 is a timing diagram of the data enable signal DE corresponding to the first image A.

[0032] Figure 10 A timing diagram of a data enable signal DE corresponding to a first image A, a compensation data enable signal CDE for a black area below the first image A, and a display data enable signal DDE for a first panel P1.

[0033] Figure 11 A timing diagram of a data enable signal DE corresponding to a first image A, a compensation data enable signal CDE for black areas above and below the first image A, and a display data enable signal DDE for a first panel P1.

[0034] Figure 12 A flowchart of a dual-screen image alignment method in another specific embodiment of the present invention.

[0035] Main component symbol description:

[0036] P1... First panel

[0037] P2... Second panel

[0038] A... First image

[0039] B... Second image

[0040] GSP... Gate start pulse

[0041] 6... Dual-screen device

[0042] AP... System side

[0043] DDIC... Display driving circuit

[0044] RAM... Memory

[0045] K1... First black area

[0046] K2... Second black area

[0047] 60... Compensation circuit

[0048] 600... Compensation control setting unit

[0049] 601... Horizontal counting unit

[0050] 602... Vertical counting unit

[0051] 603... Compensation data control unit

[0052] HS... Horizontal synchronization signal

[0053] DE... Data enable signal

[0054] L1... First line

[0055] D1 to DN... Display data

[0056] K... Black area

[0057] CDE... Compensation data enable signal

[0058] DDE... Display data enable signal

[0059] CD1 to CD3... Black data

[0060] S10 to S14... Steps Detailed implementation manner

[0061] A preferred specific embodiment according to the present invention is a dual-screen device. In this embodiment, the dual-screen device includes two display panels, and the two display panels are assembled by being connected through a hinge to achieve the function of dual-screen folding.

[0062] Figure 6 This is the functional block diagram of the dual-screen device 6 in this embodiment. As Figure 6 shown, the dual-screen device 6 includes a system-side AP, a display driving circuit DDIC, a first panel P1, and a second panel P2. The first panel P1 and the second panel P2 are assembled by being connected through a hinge. The system-side AP is coupled to the display driving circuit DDIC. The display driving circuit DDIC is respectively coupled to the first panel P1 and the second panel P2. The display driving circuit DDIC includes a memory RAM and a compensation circuit 60. The display driving circuit DDIC receives the image to be displayed from the system-side AP and stores the image to be displayed in the memory RAM.

[0063] It should be noted that the image to be displayed stored in the memory RAM only includes the first image A or the second image B, and does not include the black area in the display screens of the first panel P1 or the second panel P2. Therefore, the required storage space can be reduced, effectively avoiding the waste of the capacity of the memory RAM, and the system-side AP does not need to be adjusted accordingly, and the waste of the resources of the system-side AP can also be avoided.

[0064] In this embodiment, the display driving circuit DDIC selectively outputs the image to be displayed stored in the memory RAM or the compensation data (such as black data) generated by the compensation circuit 60 to the first panel P1 or the second panel P2 at different times.

[0065] For example, during the activation period of the Data enable signal (DE), the display driving integrated circuit (DDIC) correspondingly outputs, in sequence, a plurality of display data in the image to be displayed (the first image A or the second image B) stored in the memory RAM to the first panel P1 or the second panel P2. During the activation period of the Compensation data enable signal (CDE), the compensation circuit 60 correspondingly outputs at least one compensation data (such as black data) generated thereby to the first panel P1 or the second panel P2. It should be noted that the activation period of the Data enable signal (DE) and the activation period of the Compensation data enable signal (CDE) do not overlap with each other, and the time lengths of the activation period of the Data enable signal (DE) and the activation period of the Compensation data enable signal (CDE) can be determined according to the actual requirements of the display screen of the first panel P1 or the second panel P2 (such as the image size, the size of the black area).

[0066] Taking the adjustment of the position of the first image A displayed on the first panel P1 by the display driving integrated circuit (DDIC) as an example for illustration, as Figure 7 shown, when the system terminal AP transmits the first image A to be displayed to the display driving integrated circuit (DDIC), the first image A to be displayed is stored in the memory RAM.

[0067] Assume that the display screen of the first panel P1 includes a first black area K1, a first image A, and a second black area K2 from top to bottom. First, the Compensation data enable signal CDE is activated for a period. During this period, the compensation circuit 60 correspondingly outputs black compensation data to the first panel P1 to be displayed as the first black area K1.

[0068] Next, it is switched to the activation period of the Data enable signal DE. During this period, the display driving integrated circuit (DDIC) correspondingly outputs, in sequence, a plurality of display data in the first image A to be displayed stored in the memory RAM to the first panel P1 to be displayed as the first image A. Finally, it is switched to the activation period of the Compensation data enable signal CDE again. During this period, the compensation circuit 60 correspondingly outputs black compensation data to the first panel P1 to be displayed as the second black area K2. Therefore, the first panel P1 can display a screen including the first black area K1, the first image A, and the second black area K2 from top to bottom.

[0069] As for the case of adjusting the position of the second image B displayed on the second panel P2 by the display driving integrated circuit (DDIC), it can be analogized in the same way and will not be elaborated here.

[0070] In an embodiment, as Figure 8As shown, the compensation circuit 60 in the display driving circuit DDIC may include a compensation control setting unit 600, a horizontal counting unit 601, a vertical counting unit 602, and a compensation data control unit 603. The compensation control setting unit 600 is configured to perform setting according to the compensation data enable signal CDE. The vertical counting unit 602 is coupled to the compensation control setting unit 600 and is configured to vertically count the display lines. The horizontal counting unit 601 is respectively coupled to the compensation control setting unit 600 and the vertical counting unit 602 and is configured to horizontally count the display lines. The compensation data control unit 603 is respectively coupled to the compensation control setting unit 600, the vertical counting unit 602, and the horizontal counting unit 601 and is configured to output corresponding compensation data (such as black data) during the activation period of the compensation data enable signal CDE.

[0071] As Figure 9 , assume that the display screen of the first panel P1 only includes the first image A and does not include any black area. Then the data enable signal DE will be activated, and during N first periods when the data enable signal DE is activated, the display driving circuit DDIC will sequentially output N display data D1 to DN stored in the memory RAM in the first image A to the first panel P1 for display as the first image A, where N is a positive integer. As for the compensation data enable signal CDE corresponding to the black area, it will not be activated. Therefore, the compensation circuit 60 will not output compensation data (such as black data).

[0072] As Figure 10 , assume that the display screen of the first panel P1 includes the first image A and the black area K below it. Then the data enable signal DE will be activated first. During N first periods when the data enable signal DE is activated, the display driving circuit DDIC will sequentially output N display data D1 to DN stored in the memory RAM in the first image A to the first panel P1 for display as the first image A, where N is a positive integer. Then, it is switched to be activated by the compensation data enable signal CDE. During three second periods when the compensation data enable signal CDE is activated, the compensation circuit 60 will sequentially output three black data CD1 to CD3 to the first panel P1 for display as the black area K. Therefore, the display data enable signal DDE of the first panel P1 will sequentially include N display data D1 to DN during N first periods when the data enable signal DE is activated and three black data CD1 to CD3 during three second periods when the compensation data enable signal CDE is activated. Therefore, the first panel P1 can display a screen including the first image A and the black area K below it.

[0073] As Figure 11, assuming that the display screen of the first panel P1 includes a first image A, a first black area K1 above it, and a second black area K2 below it, the compensation data enable signal CDE will be activated first. During a second period when the compensation data enable signal CDE is activated, the compensation circuit 60 will output a black data CD1 to the first panel P1 to be displayed as the first black area K1. Then, it is switched to be activated by the data enable signal DE for N first periods. During these N first periods, the display driving circuit DDIC will sequentially output N display data D1 to DN stored in the memory RAM to the first panel P1 to be displayed as the first image A, where N is a positive integer.

[0074] Finally, it is switched to be activated by the compensation data enable signal CDE for two second periods. During these two second periods, the compensation circuit 60 will sequentially output two black data CD2 to CD3 to the first panel P1 to be displayed as the second black area K2. Therefore, the display data enable signal DDE of the first panel P1 will sequentially include one black data CD1 during a second period when the compensation data enable signal CDE is activated, N display data D1 to DN during N first periods when the data enable signal DE is activated, and two black data CD2 to CD3 during two second periods when the compensation data enable signal CDE is activated. Thus, the first panel P1 can display a screen including the first image A, the first black area K1 above it, and the second black area K2 below it.

[0075] It should be noted that the activation periods of the data enable signal DE and the compensation data enable signal CDE do not overlap with each other, and the time lengths of the activation periods of the data enable signal DE and the compensation data enable signal CDE can be determined according to the actual requirements of the display screens of the first panel P1 or the second panel P2 (such as the image size, the size of the black area). Although the above embodiments are described by taking the display driving circuit DDIC adjusting the position of the first image A displayed on the first panel P1 as an example, the situation where the display driving circuit DDIC adjusts the position of the second image B displayed on the second panel P2 can be deduced by analogy, so it will not be elaborated here.

[0076] Another preferred specific embodiment according to the present invention is a dual - screen image alignment method. The dual - screen image alignment method is applied to a dual - screen device. The dual - screen device includes a first panel, a second panel, and a display driving circuit. The first panel and the second panel are assembled by being connected through a hinge. The display driving circuit includes a memory and a compensation circuit.

[0077] Figure 12 This is the flowchart of the dual - screen image alignment method in this embodiment. As Figure 12 shown, the dual - screen image alignment method includes the following steps:

[0078] Step S10: When the display driving circuit receives the image to be displayed, store the image to be displayed in the memory;

[0079] Step S12: During N first periods started by the data enable signal, the display driving circuit sequentially outputs N display data in the image to be displayed stored in the memory correspondingly; and

[0080] Step S14: During at least one second period started by the compensation data enable signal, the compensation circuit outputs at least one compensation data correspondingly.

[0081] In one embodiment, the compensation circuit includes a compensation control setting unit, a vertical counting unit, a horizontal counting unit, and a compensation data control unit. The compensation control setting unit makes settings according to the compensation data enable signal. The vertical counting unit performs vertical counting on display lines. The horizontal counting unit performs horizontal counting on display lines. The compensation data control unit outputs the at least one compensation data correspondingly during the at least one second period started by the compensation data enable signal.

[0082] In practical applications, the dual-screen device may further include a system terminal for providing the image to be displayed to the display driving circuit and storing it in the memory; the at least one second period may be earlier than and / or later than the N first periods; the compensation data may be black.

[0083] In one embodiment, the first screen displayed on the first panel may include the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data, and the first screen is aligned with the second screen displayed on the second panel.

[0084] In another embodiment, the second screen displayed on the second panel may include the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data, and the second screen is aligned with the first screen displayed on the first panel.

[0085] Compared with the prior art, when the dual-screen device proposed by the present invention is opened from the folded state, the first screen and the second screen respectively displayed on the first panel and the second panel assembled by hinge connection can be aligned with each other through the display driving circuit and its compensation circuit, and can also effectively avoid various deficiencies such as waste of memory capacity and system terminal resources, display errors, and Demura compensation errors in the prior art, so as to greatly improve the overall satisfaction of users.

Claims

1. A dual-screen device, characterized in that, it includes: a first panel and a second panel, which are assembled by being connected with a hinge; and a display driving circuit, which is respectively coupled to the first panel and the second panel. The display driving circuit includes a memory. When the display driving circuit receives an image to be displayed, the memory stores the image to be displayed. During N first periods started by a data enabling signal, the display driving circuit sequentially outputs N display data in the image to be displayed stored in the memory correspondingly, where N is a positive integer; wherein, the display driving circuit further includes a compensation circuit. During at least one second period started by a compensation data enabling signal, the compensation circuit outputs at least one compensation data correspondingly. The compensation circuit includes: a compensation control setting unit, which is used for setting according to the compensation data enabling signal; a vertical counting unit, which is coupled to the compensation control setting unit and is used for vertically counting display lines; a horizontal counting unit, which is respectively coupled to the compensation control setting unit and the vertical counting unit and is used for horizontally counting display lines; and a compensation data control unit, which is respectively coupled to the compensation control setting unit, the vertical counting unit and the horizontal counting unit and is used for outputting the at least one compensation data correspondingly during the at least one second period started by the compensation data enabling signal.

2. The dual-screen device according to claim 1, characterized in that, the at least one second period is earlier than and / or later than the N first periods.

3. The dual-screen device according to claim 1, characterized in that, the compensation data is black.

4. The dual-screen device according to claim 1, characterized in that, it further includes: a system terminal, which is coupled to the display driving circuit and is used for providing the image to be displayed to the display driving circuit and storing it in the memory.

5. A dual-screen device, characterized in that, it includes: a first panel and a second panel, which are assembled by being connected with a hinge; and a display driving circuit, which is respectively coupled to the first panel and the second panel. The display driving circuit includes a memory. When the display driving circuit receives an image to be displayed, the memory stores the image to be displayed. During N first periods started by a data enabling signal, the display driving circuit sequentially outputs N display data in the image to be displayed stored in the memory correspondingly, where N is a positive integer; wherein, the display driving circuit further includes a compensation circuit. During at least one second period started by a compensation data enabling signal, the compensation circuit outputs at least one compensation data correspondingly. A first picture displayed on the first panel includes the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data. The first picture is aligned with a second picture displayed on the second panel.

6. A dual-screen device, characterized in that, it includes: a first panel and a second panel, which are assembled by being connected with a hinge; and A display driving circuit is respectively coupled to the first panel and the second panel. The display driving circuit includes a memory. When the display driving circuit receives an image to be displayed, the memory stores the image to be displayed. During N first periods started by a data enabling signal, the display driving circuit sequentially outputs N display data stored in the memory of the image to be displayed correspondingly, where N is a positive integer; Wherein, the display driving circuit further includes a compensation circuit. During at least one second period started by a compensation data enabling signal, the compensation circuit outputs at least one compensation data correspondingly. A second screen displayed on the second panel includes the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data. The second screen is aligned with a first screen displayed on the first panel.

7. A dual-screen alignment method, applied to a dual-screen device, Characterized in that, The dual-screen device includes a first panel, a second panel and a display driving circuit. The first panel and the second panel are assembled by hinge connection. The display driving circuit includes a memory and a compensation circuit. The dual-screen alignment method includes the following steps: (a) When the display driving circuit receives an image to be displayed, store the image to be displayed in the memory; (b) During N first periods started by a data enabling signal, the display driving circuit sequentially outputs N display data stored in the memory of the image to be displayed correspondingly; And (c) During at least one second period started by a compensation data enabling signal, the compensation circuit outputs at least one compensation data correspondingly. The compensation circuit includes a compensation control setting unit, a vertical counting unit, a horizontal counting unit and a compensation data control unit. The compensation control setting unit is set according to the compensation data enabling signal. The vertical counting unit vertically counts display lines. The horizontal counting unit horizontally counts display lines. The compensation data control unit outputs the at least one compensation data correspondingly during the at least one second period started by the compensation data enabling signal.

8. The dual-screen alignment method according to claim 7, Characterized in that, The at least one second period is earlier than and / or later than the N first periods.

9. The dual-screen alignment method according to claim 7, Characterized in that, The compensation data is black.

10. The dual-screen alignment method according to claim 7, Characterized in that, The dual-screen device further includes a system terminal, and the system terminal provides the image to be displayed to the display driving circuit and stores it in the memory.

11. A dual-screen alignment method, applied to a dual-screen device, Characterized in that, The dual-screen device includes a first panel, a second panel and a display driving circuit. The first panel and the second panel are assembled by hinge connection. The display driving circuit includes a memory and a compensation circuit. The dual-screen alignment method includes the following steps: (a) When the display driving circuit receives an image to be displayed, it stores the image to be displayed in the memory; (b) During N first periods activated by a data enabling signal, the display driving circuit sequentially outputs N display data in the image to be displayed stored in the memory correspondingly; And (c) During at least one second period activated by a compensation data enabling signal, the compensation circuit outputs at least one compensation data correspondingly. A first screen displayed on the first panel includes the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data. The first screen is aligned with a second screen displayed on the second panel.

12. A method for aligning dual-screen images, applied to a dual-screen device, Characterized in that The dual-screen device includes a first panel, a second panel and a display driving circuit. The first panel and the second panel are assembled by being connected through a hinge. The display driving circuit includes a memory and a compensation circuit. The method for aligning dual-screen images includes the following steps: (a) When the display driving circuit receives an image to be displayed, it stores the image to be displayed in the memory; (b) During N first periods activated by a data enabling signal, the display driving circuit sequentially outputs N display data in the image to be displayed stored in the memory correspondingly; And (c) During at least one second period activated by a compensation data enabling signal, the compensation circuit outputs at least one compensation data correspondingly. A second screen displayed on the second panel includes the N display data in the image to be displayed received during the N first periods and the at least one compensation data received during the at least one second period, and the at least one compensation data is located above and / or below the N display data. The second screen is aligned with a first screen displayed on the first panel.

Images