Panel charging circuit and panel charging terminal equipment

Abstract

The present invention discloses a panel charging circuit and a panel charging terminal device. The panel charging circuit includes: multiple driving modules, a display module, a main control module, a level output module, and multiple switch modules; the main control module is used to output a first start signal to the driving module, the level output module is used to output a second start signal to the driving module, and is used to generate a corresponding switch control signal to the switch module according to different display screens, the driving module is used to generate a driving signal to the switch module according to the first start signal and the second start signal, the switch module is used to switch to a corresponding path according to the switch control signal to transmit the driving signal to the display module, and the display module is used to display the screen according to the driving signal. The switch module switches to a corresponding path to transmit the driving signal according to different switch control signals, and switches to a corresponding transmission path according to different screens, saving the time for charging the panel.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuits, and in particular to a panel charging circuit and a panel charging terminal device. Background Art

[0002] As display panels develop towards high resolution and high refresh rate, the problem of insufficient charging is becoming more and more serious. Insufficient charging time has a great impact on the normal display of LCD panels, causing many undesirable phenomena, such as color deviation and water ripple problems. At present, there are still many problems in the development of high-end panels (such as 8K 120HZ panels), one of the most prominent problems is the problem of insufficient charging. Therefore, in order to further promote the development of high-end panels, it is particularly important to solve their charging problems.

[0003] For 8K 120HZ panel (7680*4320, H_total=4500, Figure 1 For example, the 1G1D architecture in the 4K 60HZ panel has a scanning time of about 16.6ms / 2 / 4500≈1.8us. This charging time is very extreme compared to the 7.4us of the 4K 60HZ panel. The charging time of the panel is CT=m*(1H), where m is a coefficient, such as 0.6, and H is one line. The charging time of 8K 120HZ is about 1.08us. Moreover, as the signal attenuates during transmission to the XR and XL sides, the charging time on both sides of the panel is even shorter. Figure 2 The figure shows the distribution of the charging time within the panel as the signal is transmitted. The charging time is most sufficient in the middle and gradually decays on both sides. At the very edge, the charging time becomes about 0.1us, or even a negative number.

[0004] If the panel structure is Figure 1 If the dual gate (GD) architecture shown in the figure is used, the scanning time of the panel will be doubled, and the charging time will be halved, so the charging time will be even more limited. In general, the charging time of the current 8K 120HZ panel is a very big bottleneck, and various display problems caused by insufficient charging time have been plaguing the industry.

[0005] Therefore the prior art still needs to be improved and enhanced. Summary of the invention

[0006] The main purpose of the present invention is to provide a panel charging circuit and a panel charging terminal device, aiming to solve the problem in the prior art that when powering a display panel, the display panel displays abnormally due to insufficient charging time.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A panel charging circuit comprises: a plurality of driving modules, a display module, a main control module, a level output module, and a plurality of switch modules; the driving modules are respectively connected to the switch modules and the level output modules, and the plurality of driving modules are connected in sequence, and the driving modules are also connected to the main control module, and each of the switch modules is also connected to the level output module and the display module; the main control module is used to output a first start signal to the driving module, the level output module is used to output a second start signal to the driving module, and is used to generate a corresponding switch control signal to the switch module according to different display pictures, the driving module is used to generate a driving signal to the switch module according to the first start signal and the second start signal, the switch module is used to switch to a corresponding path according to the switch control signal to transmit the driving signal to the display module, and the display module is used to display a picture according to the driving signal.

[0009] In the panel charging circuit, the switch module includes: a first switch unit and a second switch unit; the first switch unit is respectively connected to the driving module, the display module and the second switch unit, and the second switch unit is also connected to the driving module and the display module; the first switch unit is used to change its own opening and closing state according to the switch control signal, and the second switch unit is used to change its own opening and closing state according to the switch control signal.

[0010] In the panel charging circuit, the driving module includes: a driver; the driver of the first driving module and the driver of the second driving module are both connected to the first switch module, the driver of the third driving module and the driver of the fourth driving module are both connected to the second switch module, until the driver of the 2(N-1)th driving module and the driver of the 2Nth driving module are both connected to the Nth switch module, each of the drivers is connected in sequence, each of the drivers is also respectively connected to the main control module and the display module, and the driver of the first driving module is also connected to the level output module.

[0011] In the panel charging circuit, the number of the switch modules is half of the number of the drive modules, the first drive module and the second drive module are both connected to the first switch module, the first drive module is also connected to the level output module, the third drive module and the fourth drive module are both connected to the second switch module, until the 2(N-1)th drive module and the 2Nth drive module are both connected to the Nth switch module.

[0012] In the panel charging circuit, the first switch unit includes: a first switch tube, a second switch tube and a third switch tube; the first pin of the first switch tube is respectively connected to the driving module and the second switch unit, the second pin of the first switch tube is respectively connected to the second pin of the second switch tube and the first pin of the third switch tube, the third pin of the first switch tube, the third pin of the second switch tube and the third pin of the third switch tube are all connected to the level output module, and the first pin of the second switch tube and the second pin of the third switch tube are both connected to the display module.

[0013] In the panel charging circuit, the second switch unit includes: a fourth switch tube and a fifth switch tube; the first pin of the fourth switch tube and the first pin of the fifth switch tube are both connected to the driving module, the second pin of the fourth switch tube and the second pin of the fifth switch tube are both connected to the display module, and the third pin of the fourth switch tube and the third pin of the fifth switch tube are both connected to the level output module.

[0014] In the panel charging circuit, the level output module includes: a level converter; the level converter is respectively connected to the driving module, the third pin of the first switch tube, the third pin of the second switch tube, the third pin of the third switch tube, the third pin of the fourth switch tube and the third pin of the fifth switch tube.

[0015] In the panel charging circuit, the first switch tube, the second switch tube and the third switch tube are all thin film transistors; the first pin of the first switch tube, the first pin of the second switch tube and the first pin of the third switch tube are all sources; the second pin of the first switch tube, the second pin of the second switch tube and the second pin of the third switch tube are all drains; the third pin of the first switch tube, the third pin of the second switch tube and the third pin of the third switch tube are all gates.

[0016] In the panel charging circuit, the fourth switch tube and the fifth switch tube are both thin film transistors; the first pin of the fourth switch tube and the first pin of the fifth switch tube are both sources; the second pin of the fourth switch tube and the second pin of the fifth switch tube are both drains; the third pin of the fourth switch tube and the third pin of the fifth switch tube are both gates.

[0017] A panel charging terminal device comprises a PCB board, on which the panel charging circuit as described above is arranged.

[0018] Compared with the prior art, the present invention provides a panel charging circuit and a panel charging terminal device, wherein the panel charging circuit includes: a plurality of driving modules, a display module, a main control module, a level output module, and a plurality of switch modules; the main control module is used to output a first start signal to the driving module, the level output module is used to output a second start signal to the driving module, and is used to generate a corresponding switch control signal to the switch module according to different display screens, the driving module is used to generate a driving signal to the switch module according to the first start signal and the second start signal, the switch module is used to switch to a corresponding path according to the switch control signal to transmit the driving signal to the display module, and the display module is used to display the screen according to the driving signal. The present invention switches to a corresponding path to transmit the driving signal according to different switch control signals through the switch module, thereby realizing switching to a corresponding transmission path according to different screens, and effectively saving the time for charging the panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A pixel comparison diagram of the 1G1D architecture and the H21D architecture provided by the present invention;

[0020] Figure 2 A schematic diagram of charging time and signal attenuation provided by the present invention;

[0021] Figure 3 A structural block diagram of a panel charging circuit provided by the present invention;

[0022] Figure 4 A circuit diagram of a panel charging circuit provided by the present invention;

[0023] Figure 5 A circuit diagram of another embodiment provided by the present invention;

[0024] Figure 6 The H_strip picture and its pixel brightness and darkness picture provided by the present invention;

[0025] Figure 7 This is a flow chart of the panel charging circuit provided by the present invention.

[0026] Figure numerals: 100: driving module; 200: display module; 300: main control module; 400: level output module; 500: switch module; 510: first switch unit; 520: second switch unit; T1: first switch tube; T2: second switch tube; T3: third switch tube; T4: fourth switch tube; T5: fifth switch tube; driver: GOA block. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0029] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as herein.

[0030] The present invention provides a panel charging circuit and a panel charging terminal device, wherein the main control module outputs the corresponding switch control signal to the switch module according to different display screens, and then the switch module switches to the corresponding path to transmit the first start signal according to the switch control signal, thereby switching to the corresponding transmission path according to different screens, effectively saving the time for scanning the panel, that is, saving the time for charging the panel.

[0031] The panel charging circuit design scheme is described below through specific exemplary embodiments. It should be noted that the following embodiments are only used to explain the technical scheme of the invention and are not specifically limited:

[0032] See also Figure 3The present invention provides a panel charging circuit, comprising: a plurality of driving modules 100, a display module 200, a main control module 300, a level output module 400 and a plurality of switch modules 500; the driving modules 100 are respectively connected to the switch modules 500 and the level output module 400, and the plurality of driving modules 100 are connected in sequence, the driving modules 100 are also connected to the main control module 300, and each of the switch modules 500 is also connected to the level output module 400 and the display module 200; the main control module 300 is used to output a first opening The level output module 400 is used to output a second start signal to the driving module 100, and is used to generate a corresponding switch control signal to the switch module 500 according to different display pictures. The driving module 100 is used to generate a driving signal to the switch module 500 according to the first start signal and the second start signal. The switch module 500 is used to switch to a corresponding path according to the switch control signal to transmit the driving signal to the display module 200, and the display module 200 is used to display according to the driving signal. Wherein N is a positive integer greater than 1.

[0033] Specifically, first, the main control module 300 outputs the first start signal (clock signal CK in this embodiment (generally there are multiple CKs, such as CK1-CK6 or CK1-CK8, or even CK1-CK10 and other CK numbers), LC signal (generally two signals with opposite polarities, LC1 and LC2) and VSS signal (may include two VSS signals, namely VSS1 and VSS2, or may only have one VSS signal)) to the driving module 100, and the level output module 400 also outputs the second start signal (start signal ST) to the driving module 100, and then, the driving module 100 generates the driving signal (level logic signal) to the switch module 500 according to the first start signal and the second start signal. At the same time, the main control module 300 will display different pictures, such as a normal white picture or a special picture (H_st rip picture), control the level output module 400 to generate different switch control signals to the switch module 500; if the displayed picture is a normal picture, control the level output module 400 to generate a first switch control signal to the switch module 500, the switch module 500 switches to a first transmission path according to the first switch control signal, and then, the switch module 500 transmits the drive signal to the display module 200 according to the first transmission path; if the displayed picture is a special picture, control the level output module 400 to generate a second switch control signal to the switch module 500, the switch module 500 switches to a second transmission path according to the second switch control signal, and then, the switch module 500 transmits the drive signal to the display module 200 according to the second transmission path; finally, the display module 200 displays the picture according to the drive signal.

[0034] In the present invention, the drive signal is transmitted to the display module 200 by switching the corresponding transmission path according to different display images, so that the display module 200 can be scanned in different scanning modes, thereby saving the time for scanning the ordinary image and saving the time for charging the display module 200.

[0035] Furthermore, the number of the switch modules 500 is half of the number of the driver modules 100, the first driver module 100 and the second driver module 100 are both connected to the first switch module 500, the first driver module 100 is also connected to the level output module 400, the third driver module 100 and the fourth driver module 100 are both connected to the second switch module 500, until the second (N-1) driver module 100 and the 2N driver module 100 are both connected to the Nth switch module 500. That is, each switch module 500 is connected to two driver modules 100.

[0036] For further information, see Figure 4 , the driving module 100 includes: a driver GOA block; wherein, in the embodiment of the invention, the driver of the first driving module 100 is marked as GOA block1, the driver of the second driving module 100 is marked as GOA block2, the driver of the third driving module 100 is marked as GOA block3, until the driver of the 2Nth driving module 100 is marked as GOA block(2N); the driver GOA block1 of the first driving module 100 and the driver GOA block2 of the second driving module 100 are both connected to the first switch module 500, the driver GOA block3 of the third driving module 100 and the driver GOA block4 of the fourth driving module 100 are both connected to the second switch module 500, until the driver GOA block2(N-1) of the 2nd (N-1)th driving module 100 and the driver GOA block4 of the 2Nth driving module 100 are both connected to the second switch module 500. block (2N) is connected to the Nth switch module 500, each of the driver GOA blocks is connected in sequence, each of the driver GOA blocks is also connected to the main control module 300 and the display module 200 respectively, and the driver GOA block1 of the first driving module 100 is also connected to the level output module 400.

[0037] Among them, the driver GOA block (GOA: Gate on array) is an LCD that directly makes the row scan signal on the array or glass, which is different from the traditional method of integrating the row scan signal on an IC, namely, a gate IC. The output end of the previous driver GOA block is used as the input end of the next driver GOA block, that is, the output end of the driver GOA block1 of the first driving module is connected to the input end of the second driver GOA block2, and the output end of the second driver GOA block2 is connected to the input end of the third driver GOA block3, and so on, until the output end of the 2nd (N-1) driver GOA block2 (N-1) is connected to the input end of the 2Nth driver GOA block (2N).

[0038] Furthermore, the main control module 300 includes: a system-level chip; the system-level chip is connected to each of the driving modules 100. The system-level chip is a SOC (System-on-a-Chip), also known as a system on a chip, which is an integrated circuit with a dedicated target, which contains a complete system and all the contents of the embedded software; the main control module 300 may also include: a TCON (Timing controller), which is a timing control main chip that generates GOAtiming, Data and integrates various IPs.

[0039] Furthermore, the level output module 400 includes: a level converter; the level converter is respectively connected to the driving module 100, the third pin of the first switch tube T1, the third pin of the second switch tube T2, the third pin of the third switch tube T3, the third pin of the fourth switch tube T4, and the third pin of the fifth switch tube T5. The level converter (Level Shifter IC, LSI for short) is connected to the mainboard and the LCD screen through a screen cable or a flat cable.

[0040] Further, the switch module 500 includes: a first switch unit 510 and a second switch unit 520; wherein, in the embodiment of the invention, the first first switch unit is marked as 511, the second first switch unit is marked as 512, the third first switch unit is marked as 513, and the Nth first switch unit is marked as 51N; the first second switch unit is marked as 521, the second second switch unit is marked as 522, the third second switch unit is marked as 523, and the Nth second switch unit is marked as 52N; the first switch unit 510 is respectively connected to the driving module 100, the display module 200 and the second switch unit 520, and the second switch unit 520 is also connected to the driving module 100 and the display module 200; the first switch unit 510 is used to change its own open and closed state according to the switch control signal, and the second switch unit 520 is used to change its own open and closed state according to the switch control signal.

[0041] Specifically, the system-level chip or the timing controller controls the level converter to generate different switch control signals to the first switch unit 510 and the second switch unit 520 according to different display pictures. If the display picture is a normal picture, the level converter is controlled to generate a first switch control signal to the first switch unit 510 and the second switch unit 520. The first switch unit 510 and the second switch unit 520 switch to a first transmission path according to the first switch control signal. Finally, the first switch unit 510 transmits the drive signal to the display module 200 according to the first transmission path, so that the display module 200 performs the next operation. If the display picture is a special picture, the level converter is controlled to generate a second switch control signal to the first switch unit 510 and the second switch unit 520. The first switch unit 510 and the second switch unit 520 switch to a second transmission path according to the second switch control signal. Finally, the second switch unit 520 transmits the drive signal to the display module 200 according to the second transmission path, so that the display module 200 performs the next operation. In the present invention, the first switch unit 510 and the second switch unit 520 are controlled to switch to different paths according to different display images, so as to transmit the driving signal to the display module 200 through different paths, thereby saving the time for charging the normal image.

[0042] Further, the first switch unit 510 includes: a first switch tube T1, a second switch tube T2 and a third switch tube T3; wherein, in the embodiment of the invention, the first first switch tube is marked as T11, the second first switch tube is marked as T12, the third first switch tube is marked as T13, and the Nth first switch tube is marked as T1N; the first second switch tube is marked as T21, the second second switch tube is marked as T22, the third second switch tube is marked as T23, and the Nth second switch tube is marked as T2N; the first third switch tube is marked as T31, the second third switch tube is marked as T32, and the third third switch tube is marked as T33. The first pin of the first switch tube T1 is connected to the driving module 100 and the second switch unit 520 respectively, the second pin of the first switch tube T1 is connected to the second pin of the second switch tube T2 and the first pin of the third switch tube T3 respectively, the third pin of the first switch tube T1, the third pin of the second switch tube T2 and the third pin of the third switch tube T3 are all connected to the level converter, and the first pin of the second switch tube T2 and the second pin of the third switch tube T3 are all connected to the display module 200. In this embodiment, the output end of the odd-numbered driver GOA block is connected to the first pin of the corresponding first switch tube T1.

[0043] Specifically, if the display screen is a normal screen, first, the system-level chip or the timing controller will control the level converter to generate a high-level signal to the first switch tube T1, the second switch tube T2 and the third switch tube T3 (through the EN1 and EN2 wires in this embodiment), and at the same time generate a low-level signal to the second switch unit 520, that is, the switch control signal is a logic signal of "110", that is, the first switch control signal is a logic signal of "110". At this time, the first switch tube T1, the second switch tube T2 and the third switch tube T3 are all turned on, and the second switch unit 520 stops working and switches to the first transmission path, that is, the drive signal is transmitted to the display module 200 through the first switch tube T1, the second switch tube T2 and the third switch tube T3, so that the display module 200 performs the next operation. Since the second switch tube T2 and the third switch tube T3 are turned on at the same time, the odd-numbered bits of the driver GOA from the 1st to the 2Nth bits are turned on. The driving signals in the block can all enter the display module 200 through the corresponding second switch tube T2 and the third switch tube T3 at one time, so the panel can be scanned in double rows, which can effectively save the time for scanning and charging the panel.

[0044] If the display screen is a special screen, first, the system-level chip or the timing controller will control the level converter to generate a high-level signal to the first switch tube T1, generate a low-level signal to the second switch tube T2 and the third switch tube T3, and generate a high-level signal to the second switch unit 520, that is, the switch control signal is a logic signal of "101" (arranged in the order of EN1-EN3 wires), that is, the second switch control signal is a logic signal of "101". At this time, the first switch tube T1 is turned on, the second switch tube T2 and the third switch tube T3 are turned off, and the second switch unit 520 starts to work normally and switches to the second transmission path, that is, the drive signal is transmitted to the display module 200 through the second switch unit 520, so that the display module 200 performs the next operation, so that the special screen can be displayed normally. Among them, if the display screen is a special screen, controlling the second switch control signal to output a logic signal of "001" or "101" can also allow the special screen to be displayed normally.

[0045] Further, the second switch unit 520 includes: a fourth switch tube T4 and a fifth switch tube T5; wherein, in the embodiment of the invention, the first fourth switch tube is marked as T41, the second fourth switch tube is marked as T42, the third fourth switch tube is marked as T43, and the Nth fourth switch tube is marked as T4N; the first fifth switch tube is marked as T51, the second fifth switch tube is marked as T52, the third fifth switch tube is marked as T53, and the Nth fifth switch tube is marked as T5N; the first pin of the fourth switch tube T4 and the first pin of the fifth switch tube T5 are both connected to the driving module 100, the second pin of the fourth switch tube T4 and the second pin of the fifth switch tube T5 are both connected to the display module 200, and the third pin of the fourth switch tube T4 and the third pin of the fifth switch tube T5 are both connected to the level converter.

[0046] In this embodiment, the output end of each of the driver GOA blocks is correspondingly connected to the first pin of the fourth switch tube T4 or the first pin of the fifth switch tube T5, that is, the output end of the driver GOA block of the first driving module is connected to the first pin of the first fourth switch tube T4, the output end of the second driver GOA block is connected to the first pin of the first fifth switch tube T5, until the output end of the N-1th driver GOA block is connected to the first pin of the 2N-1th fourth switch tube T4, and the output end of the 2Nth driver GOA block is connected to the first pin of the N-1th fifth switch tube T5.

[0047] Specifically, if the display screen is a normal screen, first, the system-level chip or the timing controller will control the level converter to generate a high-level signal to the first switch tube T1, the second switch tube T2 and the third switch tube T3, and at the same time generate a low-level signal to the fourth switch tube T4 and the fifth switch tube T5 (through the EN3 wire in this embodiment), that is, the switch control signal is a logic signal of "110", that is, the first switch control signal is a logic signal of "110". At this time, the first switch tube T1, the second switch tube T2 and the third switch tube T3 are all turned on, and the fourth switch tube T4 and the fifth switch tube T5 are all turned off, switching to the first transmission path, that is, the drive signal is transmitted to the display module 200 through the first switch tube T1, the second switch tube T2 and the third switch tube T3, so that the display module 200 performs the next operation.

[0048] If the display screen is a special screen, first, the system-level chip or the timing controller will control the level converter to generate a high-level signal to the first switch tube T1, the fourth switch tube T4 and the fifth switch tube T5, and generate a low-level signal to the second switch tube T2 and the third switch tube T3, that is, the switch control signal is a logic signal of "101", that is, the second switch control signal is a logic signal of "101". At this time, the first switch tube T1, the fourth switch tube T4 and the fifth switch tube T5 are turned on, and the second switch tube T2 and the third switch tube T3 are turned off, switching to the second transmission path, that is, the drive signal is transmitted to the display module 200 through the fourth switch tube T4 and the fifth switch tube T5, so that the display module 200 performs the next operation. At this time, since each of the driver GOA block is connected to a corresponding fourth switch tube T4 or the fifth switch tube T5, and the driving signal enters the display module 200 through the fourth switch tube T4 and the fifth switch tube T5, so the special picture is scanned line by line, so that the special picture can be displayed normally, ensuring the integrity of the display picture.

[0049] Furthermore, if Figure 5 Another solution of the present invention is as follows: the output end of the driver GOA block of the even-numbered bits is connected to the first pin of the corresponding first switch tube T1, and the output end of each driver GOA block is connected to the corresponding fourth switch tube T4 or the corresponding fifth switch tube T5, that is, the connection method of the driver GOA block of the even-numbered bits in the replacement solution is just the connection method of the driver GOA block of the odd-numbered bits in this embodiment, and the effect of the embodiment can also be achieved, and the implementation method is the same as that of the embodiment.

[0050] Figure 4 In the embodiment, the odd-numbered blocks of the GOA block are used for scanning. The original GOA block1 / GOAblock3...GOA block (N-1) is used as a new scanning circuit, which outputs gout1 / gout2...goutN (if 8K1G1D, then N=2160) as the scanning drive signal for each row. In the prior art, the number of rows to be scanned is 2N=4320. After adopting the scanning method of the present invention, the number of rows to be scanned can be reduced to half of the original number. Due to the double-sided drive, Figure 4 The right GOA signal is also scanned synchronously with the left GOA signal, that is, the ST start signal is inputted to both sides at the same time, and the CK / LC / VSS signals are also acquired synchronously, and both sides scan the 1st row, the 2nd row, and so on until the Nth row. Similarly, Figure 5 and Figure 4 In comparison, only the even number of GOA blocks of the original circuit is used to form a new GOA scanning circuit, and each row also outputs gout1 / gout2...goutN (if 8K 1G1D, then N = 2160). This solution is also applicable to the dual gate architecture (see Figure 1 ), TCON-less architecture (TCON functional module is integrated into SOC, SOC directly outputs Mini-LVDS or PP signal to the screen driver IC) and VBO architecture (TCON functional module is not integrated into SOC, there is an independent TCON IC, at this time SOC inputs VBO signal (or LVDS) to TCON IC, TCON IC outputs PP signal (or Mini-LVDS) to the screen driver IC), and this solution can also be used in non-bilateral drive architecture.

[0051] If only two lines are turned on and scanned, some special images cannot be displayed, such as H_strip images, which are images with one line bright and one line dark, and cannot be realized using the driving method of the present invention. For this reason, the panel charging circuit set in the present invention is a control circuit for controlling the switching between line-by-line scanning and two-line-by-two scanning. Figure 4As shown, TFT tubes T11-T(1N), T21-T(2N), T31-T(3N), T41-T(4N) and T51-T(5N) are set to control the type of row scanning, wherein the bases of these tubes are connected to the EN1-EN3 wires respectively, and the drains of T21-T(2N), T31-T(3N), T41-T(4N), T51-T(5N) and T11-T(1N) are respectively connected to GoutN (in this embodiment, the drain of the corresponding switch tube on the left is marked as GoutN_L, and the drain of the corresponding switch tube on the right is marked as GoutN_R) and goutN (in this embodiment, the drain of the corresponding switch tube on the left is marked as goutN_L, and the drain of the corresponding switch tube on the right is marked as goutN_R). When the EN1-EN3 wires are at a logic level of "110", T11 / T21 / T31 / T12 / T22...T(2N) / T(3N) are all turned on, and the GOA scanning circuit is turned on two rows at a time. When the EN1-EN3 wires are at a logic level of "101", "001" or "101", T41 / T51 / T42 / T52...T(4N) / T(5N) are all turned on, and Gout1 / Gout2...Gout(2N) scans row by row in sequence, which can display some special images, such as an H_Strip image with one row bright and one row dark. Similarly, Figure 5 The circuit also sets up a TFT tube for switching between single-line scanning and double-line scanning. Its working or scanning principle is the same as Figure 4 Similarly, the scanning mode can be switched according to different screens, which not only significantly improves the charging time of high-end panels, but also takes into account the display of some special screens.

[0052] The embodiment of the present invention proposes a method of opening a row according to the screen selection. For a very small number of screens that require each row of data to change, such as an H_strip screen (one row is bright and one row is dark), you can refer to Figure 6 , this screen is rarely used, and is only used when the panel factory does extreme power consumption testing). You can control the panel to scan line by line. For most screens, you can control the panel to open two lines at a time, which can theoretically save half the scanning time and double the charging time.

[0053] Furthermore, the first switch tube T1, the second switch tube T2 and the third switch tube T3 are all thin film transistors; the first pin T1 of the first switch tube, the first pin of the second switch tube T2 and the first pin of the third switch tube T3 are all sources; the second pin of the first switch tube T1, the second pin of the second switch tube T2 and the second pin T3 of the third switch tube are all drains; the third pin of the first switch tube T1, the third pin of the second switch tube T2 and the third pin of the third switch tube T3 are all gates. The English abbreviation of the thin film transistor is TFT (Thin Film Transistor): it means that each liquid crystal pixel on the liquid crystal display is driven by a thin film transistor integrated thereafter.

[0054] Furthermore, the fourth switch tube T4 and the fifth switch tube T5 are both thin film transistors; the first pin of the fourth switch tube T4 and the first pin of the fifth switch tube T5 are both sources; the second pin of the fourth switch tube T4 and the second pin of the fifth switch tube T5 are both drains; the third pin of the fourth switch tube T4 and the third pin of the fifth switch tube T5 are both gates.

[0055] like Figure 7 To implement the flowchart of this embodiment, after the LCD is powered on, the SOC or TCON will judge the input data. For a very small number of screens that require different data for each row, the SOC or TCON will control the Level shifter IC to output the corresponding logic level signal ("101", "001" or "101") to the EN1-EN3 wires, then all T41-T (4N) and T51-T (5N) switches are turned on, and the GOA signal is scanned line by line. If it is determined that the displayed screen is not a different screen for each row, the SOC or TCON will control the Level shifter IC to output the corresponding logic level signal ("110") to the EN1-EN3 wires, all T11-T (1N), T21-T (2N) and T31-T (3N) switches are turned on, and GOA is turned on two rows at a time, so that the charging time is reduced to half.

[0056] In order to better understand the present invention, the following Figure 4 The working principle of the panel charging circuit of the present invention is described in detail:

[0057] First, the system-on-chip (SOC) or the timing controller (TCON) outputs the first start signal (clock signal CK in this embodiment (generally there are multiple CKs, such as CK1-CK6 or CK1-CK8, or even CK1-CK10), LC signal (generally two signals with opposite polarities, LC1 and LC2) and VSS signal (may include two VSS signals, namely VSS1 and VSS2, or may only have one VSS signal)) to the odd-numbered driver GOA block, and the level converter also outputs the second start signal (start signal ST) to the driver GOAblock of the first driver module, and then the driver GOA The block generates the driving signal (level logic signal) to the first switch tube T1 and the corresponding fourth switch tube T4 of the odd-numbered bits according to the first start signal and the second start signal. At the same time, the system-level chip or the timing controller controls the level converter to generate different switch control signals to the first switch tube T1, the second switch tube T2, the third switch tube T3, the fourth switch tube T4 and the fifth switch tube T5 through the EN1-EN3 wires according to different display images, such as ordinary white images or special images (H_strip images):

[0058] If the display screen is the normal screen, first, the system-level chip or the timing controller will control the level converter to generate a high-level signal to the first switch tube T1, the second switch tube T2 and the third switch tube T3, and at the same time generate a low-level signal to the fourth switch tube T4 and the fifth switch tube T5 (through the EN3 wire in this embodiment), that is, the switch control signal is a logic signal of "110", that is, the first switch control signal is a logic signal of "110". At this time, the first switch tube T1, the second switch tube T2 and the third switch tube T3 are all turned on, and the fourth switch tube T4 and the fifth switch tube T5 are all turned off, switching to the first transmission path, that is, the drive signal is transmitted to the display module 200 through the first switch tube T1, the second switch tube T2 and the third switch tube T3.

[0059] If the display screen is the special screen, first, the system-level chip or the timing controller will control the level converter to generate a high-level signal to the first switch tube T1, the fourth switch tube T4 and the fifth switch tube T5, and at the same time generate a low-level signal to the second switch tube T2 and the third switch tube T3, that is, the switch control signal is a logic signal of "101", that is, the second switch control signal is a logic signal of "101". At this time, the first switch tube T1, the fourth switch tube T4 and the fifth switch tube T5 are turned on, and the second switch tube T2 and the third switch tube T3 are turned off, switching to the second transmission path, that is, the drive signal is transmitted to the display module 200 through the fourth switch tube T4 and the fifth switch tube T5.

[0060] Furthermore, the present invention also corresponds to a panel charging terminal device, including a PCB board, on which the panel charging circuit as described above is arranged; since the panel charging circuit has been described in detail above, it will not be repeated here.

[0061] In summary, the present invention provides a panel charging circuit and a panel charging terminal device, wherein the panel charging circuit includes: a plurality of driving modules, a display module, a main control module, a level output module, and a plurality of switch modules; the main control module is used to output a first start signal to the driving module, the level output module is used to output a second start signal to the driving module, and is used to generate a corresponding switch control signal to the switch module according to different display screens, the driving module is used to generate a driving signal to the switch module according to the first start signal and the second start signal, the switch module is used to switch to a corresponding path according to the switch control signal to transmit the driving signal to the display module, and the display module is used to display the screen according to the driving signal. The present invention switches to a corresponding path to transmit the driving signal according to different switch control signals through the switch module, thereby realizing switching to a corresponding transmission path according to different screens, and effectively saving the time for charging the panel.

[0062] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A panel charging circuit, characterized in that: include: Multiple drive modules, display modules, main control modules, level output modules, and multiple switch modules; The driving module is connected to the switch module and the level output module respectively, and the plurality of driving modules are connected in sequence. The driving modules are also connected to the main control module, and each of the switch modules is also connected to the level output module and the display module; the main control module is used to output a first start signal to the driving module, the level output module is used to output a second start signal to the driving module, and is used to generate a corresponding switch control signal to the switch module according to different display images, the driving module is used to generate a driving signal to the switch module according to the first start signal and the second start signal, the switch module is used to switch to a corresponding path according to the switch control signal to transmit the driving signal to the display module, and the display module is used to display the image according to the driving signal The switch module comprises: a first switch unit and a second switch unit; the first switch unit is connected to the driving module, the display module and the second switch unit respectively, and the second switch unit is also connected to the driving module and the display module; the first switch unit is used to change its own opening and closing state according to the switch control signal, and the second switch unit is used to change its own opening and closing state according to the switch control signal; The driving module comprises: a driver; the driver of the first driving module and the driver of the second driving module are both connected to the first switch module, the driver of the third driving module and the driver of the fourth driving module are both connected to the second switch module, until the driver of the second (N-1) driving module and the driver of the 2N driving module are both connected to the Nth switch module, each of the drivers is connected in sequence, each of the drivers is also connected to the main control module and the display module respectively, and the driver of the first driving module is also connected to the level output module; The main control module includes: a system-level chip; the system-level chip is connected to each of the driving modules; The system-level chip or the timing controller controls the level converter to generate different switch control signals to the first switch unit and the second switch unit according to different display images; The first switch unit includes: a first switch tube, a second switch tube and a third switch tube; the first pin of the first switch tube is connected to the driving module and the second switch unit respectively, the second pin of the first switch tube is connected to the second pin of the second switch tube and the first pin of the third switch tube respectively, the third pin of the first switch tube, the third pin of the second switch tube and the third pin of the third switch tube are all connected to the level output module, and the first pin of the second switch tube and the second pin of the third switch tube are all connected to the display module; The second switch unit includes: a fourth switch tube and a fifth switch tube; the first pin of the fourth switch tube and the first pin of the fifth switch tube are both connected to the driving module, the second pin of the fourth switch tube and the second pin of the fifth switch tube are both connected to the display module, and the third pin of the fourth switch tube and the third pin of the fifth switch tube are both connected to the level output module; Each of the switch modules is connected to two of the drive modules; The output ends of the even-numbered drivers are connected to the first pins of the corresponding first switch tubes, and the output ends of each driver are connected to the corresponding fourth switch tube or the corresponding fifth switch tube.

2. The panel charging circuit according to claim 1, characterized in that: The number of the switch modules is half of the number of the drive modules, the first drive module and the second drive module are both connected to the first switch module, the first drive module is also connected to the level output module, the third drive module and the fourth drive module are both connected to the second switch module, until the 2(N-1)th drive module and the 2Nth drive module are both connected to the Nth switch module.

3. The panel charging circuit according to claim 1, characterized in that: The level output module includes: a level converter; the level converter is respectively connected to the driving module, the third pin of the first switch tube, the third pin of the second switch tube, the third pin of the third switch tube, the third pin of the fourth switch tube and the third pin of the fifth switch tube.

4. The panel charging circuit according to claim 3, characterized in that: The first switch tube, the second switch tube and the third switch tube are all thin film transistors; the first pin of the first switch tube, the first pin of the second switch tube and the first pin of the third switch tube are all sources; the second pin of the first switch tube, the second pin of the second switch tube and the second pin of the third switch tube are all drains; the third pin of the first switch tube, the third pin of the second switch tube and the third pin of the third switch tube are all gates.

5. The panel charging circuit according to claim 4, characterized in that: The fourth switch tube and the fifth switch tube are both thin film transistors; the first pin of the fourth switch tube and the first pin of the fifth switch tube are both sources; the second pin of the fourth switch tube and the second pin of the fifth switch tube are both drains; The third pin of the fourth switch tube and the third pin of the fifth switch tube are both gates.

6. A panel charging terminal device, comprising a PCB board, characterized in that: The PCB board is provided with a panel charging circuit as described in any one of claims 1-5.

Images