Test device

Abstract

The application provides a test device, which comprises a mainboard and a display module connected with the mainboard, the mainboard is internally provided with a screen driving circuit, the display module comprises a display panel, the mainboard is used for acquiring a control instruction and generating a screen signal and a screen control signal corresponding to the display module according to the control instruction, wherein the screen signal is a plurality of differential signal pairs, the control instruction is generated by the mainboard through detecting a user operation or detecting a preset file, the display module is configured to drive the display module to display according to the screen signal and / or the screen control signal, and corresponding control instructions are acquired according to different display panels to be controlled, thereby realizing the control of different display panels, especially when the mainboard is debugged or repaired, a general display module is adopted, the practicability of the TCONLESS scheme is improved, and the cost of debugging and repairing is saved.

Description

Technical Field

[0001] This invention relates to the field of LCD television technology, and more particularly to a testing device. Background Technology

[0002] With the development of the LCD TV market, market competition has become extremely fierce, thus placing higher demands on the cost of LCD TVs.

[0003] Therefore, in the existing technology, the timer control register (TCON) board of the liquid crystal display panel is generally integrated into the TV motherboard, and the TCON chip is integrated into the system on chip (SOC) to directly output P2P (point to point) signals to the display panel. This is an effective way to reduce costs, namely the TCONLESS solution.

[0004] However, due to differences in the specifications and compatible communication protocols of display panels produced by different manufacturers, the motherboard and display panel models must be matched to display the image properly. When debugging or performing after-sales maintenance, the factory needs to prepare the corresponding display panels for TVs using different specifications in order to light up the display panel through the TCONLESS board and perform debugging or maintenance of the TCONLESS board, resulting in high maintenance and production costs. Summary of the Invention

[0005] This invention provides a testing device that aims to overcome the problem of high maintenance and production costs caused by the incompatibility of TCONLESS boards with various display panels in the prior art.

[0006] In a first aspect, the present invention provides a testing device, the device comprising: a motherboard and a display module connected to the motherboard, the motherboard having a built-in screen driving circuit, and the display module including a display panel;

[0007] The motherboard is used to acquire control commands and generate on-screen signals and screen control signals corresponding to the display module according to the control commands; wherein, the on-screen signals are multiple sets of differential signal pairs, and the control commands are generated by the motherboard by detecting user operations or detecting preset files; the screen control signals include gamma correction voltage, voltage control signals that provide power to the display panel, and drive control voltages for driving the display panel to display.

[0008] The display panel is configured to drive the display module to display according to the screen signal and / or the screen control signal.

[0009] In one specific implementation, the display module includes a first display module, which includes a first display panel and a converter circuit connected to the first display panel; if the control instruction is a first control instruction for instructing the motherboard to generate a signal corresponding to the first display panel, then the output terminal of the motherboard is connected to the input terminal of the first display panel through the converter circuit.

[0010] The adapter circuit is used to provide power supply voltage to the first display panel;

[0011] The motherboard is used to generate a first screen-on signal and a screen control signal according to the first control command; wherein, the first screen-on signal is 8 sets of differential signal pairs conforming to the VbyOne digital interface standard; the first display panel has a VbyOne interface;

[0012] The motherboard is also used to send the first screen signal to the first display panel through the adapter circuit, thereby driving the first display panel to perform display.

[0013] Furthermore, the device also includes: a control signal detection module;

[0014] The motherboard is connected to the control signal detection module via the adapter circuit;

[0015] The adapter circuit is used to convert the screen control signal sent by the motherboard and then send the screen control signal to the control signal detection module.

[0016] The control signal detection module is used to detect whether the screen control signal is normal.

[0017] Furthermore, the adapter circuit includes: a screen control signal processing module;

[0018] The screen control signal processing module includes: an analog-to-digital conversion submodule, a microcontroller unit (MCU) submodule, and a level conversion submodule;

[0019] The MCU submodule is connected to the analog-to-digital conversion submodule and the level conversion submodule, respectively;

[0020] The analog-to-digital conversion submodule is used to convert the screen control signal from an analog signal to a digital signal;

[0021] The MCU submodule is used to acquire the digital signal and send the digital signal to the level conversion submodule;

[0022] The level conversion submodule is used to boost the digital signal.

[0023] Optionally, the adapter circuit further includes: a wire sequence sorting module;

[0024] The wiring ordering module is connected between the motherboard and the screen control signal processing module, and includes multiple input sockets and two output sockets.

[0025] The wiring sequence sorting module is used to match the wiring sequence of the output terminal of the motherboard with the wiring sequence of the input terminal of the screen control signal processing module.

[0026] Optionally, the adapter circuit includes: an input socket, an output socket, and a power supply module;

[0027] The adapter circuit is connected to the output socket of the motherboard through the input socket, and receives the first screen-on signal and the screen control signal sent by the motherboard;

[0028] The adapter circuit is connected to the input socket of the first display panel via the output socket;

[0029] The adapter circuit sends the first on-screen signal to the on-screen signal input pin of the input socket of the first display panel through the on-screen signal output pin in the output socket;

[0030] The power supply module is connected to the power supply pin of the input socket of the first display panel through the power supply pin of the output socket, so as to provide power supply voltage to the first display panel.

[0031] Optionally, the input socket of the adapter circuit is two 60-pin sockets, and the output socket of the adapter circuit is a 51-pin socket.

[0032] Furthermore, the adapter circuit also includes: a control signal output terminal;

[0033] The control signal output terminal is connected to the input terminal of the control signal detection module;

[0034] The adapter circuit sends the screen control signal to the control signal detection module through the control signal output terminal.

[0035] In one specific implementation, the display module includes a second display module, and the second display module includes a second display panel; if the control instruction is a second control instruction for instructing the motherboard to generate a signal corresponding to the second display panel, then the output terminal of the motherboard is connected to the input terminal of the second display panel;

[0036] The motherboard is used to generate a second screen-on signal and a screen control signal according to the second control command; wherein, the second screen-on signal is a plurality of P2P signal pairs; the second display panel has a plurality of P2P signal interfaces;

[0037] The motherboard is also used to send the second screen signal and / or the screen control signal to the second display panel to drive the second display panel to perform display.

[0038] In one specific implementation, the motherboard includes: a main chip, a power management unit (PMU) module, a gamma correction module, a level conversion module, and an output socket; the main chip is an integrated chip of a SOC and a TCON chip.

[0039] The main chip's power supply control pin is connected to the power supply pin of the PMU module, providing power to the PMU module; the main chip communicates with the PMU module and the GAMMA module via a bus pin; the main chip sends drive control signals to the level conversion module via a drive control pin; the PMU module is connected to the GAMMA module; the output socket is connected to the main chip's on-screen signal output pin and is also connected to the output pins of the PMU module, the GAMMA module, and the level conversion module.

[0040] The main chip is used to generate the on-screen signal and control signal according to the control instructions;

[0041] The PMU module is used to output the voltage control signal according to the control signal;

[0042] The GAMMA module is used to output the GAMMA voltage signal according to the control signal;

[0043] The level conversion module is used to convert the control signal sent by the main chip to obtain a drive control signal, and then output the drive control signal.

[0044] Optionally, the motherboard has two 60-pin output sockets.

[0045] This invention provides a testing device comprising a motherboard and a display module connected to the motherboard. The motherboard has a built-in screen driving circuit, and the display module includes a display panel. The motherboard is used to acquire control commands and generate a screen-on signal and a screen control signal corresponding to the display module based on the control commands. The screen-on signal consists of multiple differential signal pairs, and the control commands are generated by the motherboard by detecting user operations or detecting preset files. The motherboard is also used to drive the display module to display based on the screen-on signal and / or the screen control signal. By acquiring corresponding control commands for different display panels to be controlled, control of different display panels is achieved. In particular, the use of a universal display module during motherboard debugging or repair increases the practicality of the TCONLESS solution and saves debugging and repair costs. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of the testing device provided in Embodiment 1 of the present invention;

[0048] Figure 2 This is a schematic diagram of the structure of the testing device according to Embodiment 2 of the present invention;

[0049] Figure 3 This is a schematic diagram of the structure of the testing device according to Embodiment 3 of the present invention;

[0050] Figure 4a A schematic diagram of the adapter circuit provided in an embodiment of the present invention. Figure 1 ;

[0051] Figure 4b A schematic diagram of the adapter circuit provided in an embodiment of the present invention. Figure 2 ;

[0052] Figure 4c A schematic diagram of the adapter circuit provided in an embodiment of the present invention. Figure 3

[0053] Figure 5 This is a schematic diagram of the structure of the testing device in Embodiment 4 of the present invention;

[0054] Figure 6 This is a schematic diagram of the structure of the testing device in embodiment five of the present invention;

[0055] Figure 7 A schematic diagram of the gate working timing of a display panel provided by the present invention;

[0056] Figure 8 A voltage divider circuit provided by the present invention;

[0057] Figure 9 This is a schematic diagram of the hardware structure of a motherboard provided in an embodiment of the present invention. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] In existing technologies, the cost is often reduced by integrating the Timer Control Register (TCON) board onto the TV motherboard, i.e., the TCONLESS solution. However, this leads to the problem that the display panel cannot be lit when the motherboard and the display panel are incompatible, which in turn causes inconvenience for factory debugging and after-sales maintenance.

[0061] To address the above issues, the testing device provided by this invention enables the motherboard to be compatible with display panels used in commercially available products, as well as display panels used for debugging and repair.

[0062] The testing device provided by the present invention will be described below through several specific embodiments.

[0063] The testing device in this solution can be applied to any terminal device with a display screen, such as mobile phones, tablets, televisions, personal computers, laptops, wearables, etc., and can also be applied to industrial equipment or medical equipment, etc.

[0064] Figure 1 This is a schematic diagram of the structure of the testing device provided in Embodiment 1 of the present invention, as shown below. Figure 1 As shown, the test device includes a motherboard 01 and a display module 02. The motherboard 01 is connected to the display module 02. The motherboard has a built-in screen driver (TCON) circuit. It can be understood that the motherboard can realize all the functions of the TCON board through the TCON circuit.

[0065] Optionally, the motherboard 01 and the display module 02 can be connected via two pairs of 60-pin connectors. That is, the motherboard 01 has two 60-pin connectors at its output end, and the display module 02 has two corresponding 60-pin connectors at its input end. The motherboard 01 connects to the display module 02 via the two 60-pin connectors at its output end. It is worth noting that this application does not limit the connectors used to connect the motherboard 01 and the display module 02 to 60-pin connectors; different connector specifications can be used as needed.

[0066] Optionally, the display module may include a display panel, or it may also include functional circuits, adapter circuits, or other devices connected to the display panel.

[0067] The motherboard 01 is used to acquire control commands and generate screen input signals and screen control signals corresponding to the display module based on the control commands. The screen input signals consist of multiple differential signal pairs. The control commands are generated by the motherboard by detecting user operations or preset files. The screen control signals include a gamma correction voltage, a voltage control signal providing power to the display panel, and a drive control voltage for driving the display panel. The motherboard 01 is also used to drive the display module to display based on the screen input signals and / or the screen control signals. Correspondingly, the display module 02 is configured to display based on the screen input signals and / or the screen control signals.

[0068] In one possible implementation, the method for obtaining control commands provided by this solution includes: during the system boot phase, the motherboard 01 detects user operations and preset files, obtains the detection results, and determines the specification information of the display module to be controlled based on the detection results. The specification information includes at least one of data format, control signal, interface type, and protocol type. Then, based on the specification information, control commands are generated, and the control commands include screen parameters to be set.

[0069] For example, it can detect whether the user has issued a request command via remote control, which is used to request entry into the debugging or maintenance environment. Optionally, the request command can be issued via a specific remote control or by pressing a specific button. Another example is to detect whether a preset file exists, which is used to indicate the need to enter the debugging or maintenance environment. Alternatively, it can detect the contents of the preset file and determine whether entry into the debugging or maintenance environment is required based on the contents. Optionally, the preset file can be set in an external storage device, such as a USB flash drive.

[0070] Furthermore, based on the test results, if it is determined that a debugging or repair environment is required, then the display module to be controlled is identified as a display module used for debugging or repairing the motherboard, such as a display module conforming to the digital interface standard (VbyOne, VB1). Alternatively, if it is determined that a debugging or repair environment is not required, then the display module to be controlled is identified as a display module used in normal production and sales (outside of debugging or repair environments), such as a display module conforming to the EPI / ISP / CEDS / USIT / CMPI protocol. Subsequently, different control commands are generated depending on the display module to be controlled.

[0071] Optionally, the method of acquiring control commands may also include receiving control commands sent by other devices.

[0072] The on-screen signal consists of multiple differential signal pairs depending on the display module. For example, if the display module is a general-purpose VB1 display module used for debugging or repairing the motherboard, the on-screen signal consists of 8 VB1 differential signal pairs. If the display module is a point-to-point (P2P) display module used in normal production or sales and matched with the motherboard, the on-screen signal consists of 12 P2P signal pairs. It should be noted that the VB1 display module mentioned in this application refers to the type of display module that only receives VB1 signals. For convenience, display modules that receive other signals are referred to as point-to-point display modules used in normal production or sales and matched with the motherboard. Of course, the format of the received signal is not limited to P2P; solution providers can define the format of the transmitted signal according to their own needs.

[0073] This invention provides a testing device comprising a motherboard 01 and a display module 02 connected to the motherboard 01. The motherboard 01 has a built-in screen driving circuit. The motherboard 01 is used to acquire control commands and generate a screen-on signal and a screen control signal corresponding to the display module 02 according to the control commands. The screen-on signal consists of multiple differential signal pairs, and the control commands are generated by the motherboard by detecting user operations or detecting preset files. The motherboard 01 is also used to drive the display module to display according to the screen-on signal and / or the screen control signal. According to different display panels to be controlled, corresponding control commands are acquired, realizing the control of different display panels. In particular, when debugging or repairing the motherboard, a universal display module is used, which increases the practicality of the TCONLESS solution and saves debugging and repair costs.

[0074] exist Figure 1 Based on the illustrated embodiment, Figure 2 This is a schematic diagram of the structure of a second embodiment of the testing device provided in this invention. The display module 02 includes a first display module 021, as shown below. Figure 2 As shown, the first display module 021 includes a first display panel 0211. The first display panel 0211 is usually a general display panel used for debugging or repairing the motherboard, such as a VB1 display panel. It has a VB1 interface. Since the input terminal of the VB1 display panel is often equipped with a 51-pin socket, it cannot be directly connected to the motherboard 01. Therefore, in addition to the first display panel 0211, the first display module 021 also includes an adapter circuit 0212. The first display panel 0211 is connected to the adapter circuit 0212.

[0075] Since display module 02 is the first display module 021, the control command should be a first control command used to instruct motherboard 01 to generate a signal corresponding to the first display panel 021. Then, the output terminal of motherboard 01 is connected to the input terminal of the first display panel 0211 through adapter circuit 0212.

[0076] The adapter circuit 0212 is used to provide power supply voltage to the first display panel 0211; the main board 01 is used to generate a first screen-on signal and a screen control signal according to the first control instruction, wherein the first screen-on signal is 8 sets of differential signal pairs conforming to the digital interface standard VB1.

[0077] The motherboard 01 is also used to send the first screen signal to the first display panel 0211 through the adapter circuit 0212, and drive the first display panel 0211 to display.

[0078] Furthermore, the motherboard 01 can be debugged or repaired based on the content displayed on the first display panel 0211.

[0079] Optionally, the adapter circuit 0212 can be connected between the motherboard and the first display module 021 independently of the first display module 021.

[0080] Furthermore, combined Figure 3 The diagram below is a structural schematic of a third embodiment of the testing device provided in this invention. The testing device further includes a control signal detection module 03.

[0081] The motherboard 01 is connected to the control signal detection module 03 via the adapter circuit 0212.

[0082] The adapter circuit 0212 is used to convert the screen control signal sent by the motherboard 01 and then send the screen control signal to the control signal detection module 03.

[0083] The control signal detection module 03 is used to detect whether the control signal of the screen is normal.

[0084] exist Figure 2 and Figure 3 Based on the illustrated embodiment, Figure 4a A schematic diagram of the adapter circuit provided in an embodiment of the present invention. Figure 1 , Figure 4b A schematic diagram of the adapter circuit provided in an embodiment of the present invention. Figure 2 , combined Figure 4a As shown, the adapter circuit 0212 includes: a screen control signal processing module 100.

[0085] The screen control signal processing module 100 includes: an analog-to-digital conversion submodule 101, a microcontroller unit (MCU) submodule 102, and a level conversion submodule 103; the MCU submodule 102 is connected to the analog-to-digital conversion submodule 101 and the level conversion submodule 103 respectively.

[0086] The analog-to-digital conversion submodule 101 is used to convert the screen control signal from an analog signal to a digital signal. The MCU submodule 102 is used to obtain the digital signal from the analog-to-digital conversion submodule 101 and send the digital signal to the level conversion submodule 103. The level conversion submodule 103 is used to boost the digital signal.

[0087] For example, the digital signal obtained by the analog-to-digital converter submodule 101 is a transistor-to-transistor logic (TTL) level signal. The level conversion submodule 103 boosts the TTL level signal and converts it into a level signal that conforms to the RS232 standard.

[0088] Combination Figure 4a and 4b As shown, the adapter circuit 0212 also includes: an input socket 104, an output socket 105, and a power supply module 1.

[0089] The adapter circuit 0212 is connected to the output socket of the motherboard 01 via the input socket 104, and receives the first screen-on signal and screen control signal sent by the motherboard 01; the adapter circuit 0212 is connected to the input socket XP3 of the first display panel 021 via the output socket 105; optionally, the output socket of the motherboard 01 includes two 60-pin sockets, namely XP11 and XP12.

[0090] The adapter circuit 0212 sends the first screen-on signal to the screen-on signal input pin (e.g., VB1_0N~VB1_7N, VB1_0P~VB1_7P) of the input socket XP3 of the first display panel 021 through the screen-on signal output pin (e.g., VB1_0N~VB1_7N, VB1_0P~VB1_7P) in the output socket.

[0091] The power supply module 1 is connected to the power supply pin VCC_Panel of the input socket XP3 of the first display panel 021 through the power supply pin VCC_Panel of the output socket, so as to provide power supply voltage to the first display panel 021.

[0092] Optionally, the adapter circuit 0212 has two 60-pin input sockets and one 51-pin output socket.

[0093] In this embodiment, when the motherboard 01 needs to be debugged, the display module 02 connected to the motherboard 01 is the first display module 021. The motherboard 01 outputs the corresponding screen display signal and drive signal to the first display module 021 according to the first control command, and drives the first display module 021 to display. By combining the content displayed by the first display module 021, the motherboard 01 can be debugged or repaired without having to match each motherboard with its own display module for debugging or repair, which saves costs and increases the practicality of the TCONLESS solution.

[0094] In some embodiments, the adapter circuit 0212 further includes: a control signal output terminal XP5; the control signal output terminal XP5 is connected to the input terminal of the control signal detection module 03;

[0095] The adapter circuit 0212 sends the screen control signal to the control signal detection module 03 through the control signal output terminal XP5. The screen control signal is the screen control signal obtained after processing by the screen control signal processing module 100. The screen control signal includes voltage control signals, such as VCOM voltage, VGH voltage, VGL voltage, VDDA voltage, and the GAMMA voltages output by the motherboard's GAMMA module (VG1, VG7, VG8, and VG14), as well as drive control signals, such as the drive control signals output by the motherboard's level conversion module (HC1~HC8, ST1, LC1, LC2, and VSS_XON).

[0096] In this embodiment, the motherboard 01 sends the screen control signal to the control signal output terminal XP5 of the adapter circuit 0212 to the control signal detection module 03, thereby realizing the detection of the screen control signal. By detecting whether the screen control signal is normal, the motherboard 01 can be debugged or repaired.

[0097] Based on the above embodiments, Figure 4c A schematic diagram of the adapter circuit provided in an embodiment of the present invention. Figure 3 ,like Figure 4c As shown, the adapter circuit 0212 also includes: a wire sequence sorting module 200;

[0098] The wiring ordering module 200 is connected between the motherboard 01 and the screen control signal processing module 100, and includes multiple input sockets 201 and two output sockets 202;

[0099] The wiring sequence sorting module is used to match the wiring sequence of the output terminals of the motherboard 01 with the wiring sequence of the input terminals of the screen control signal processing module 100.

[0100] According to the wiring sequence or interface package of the motherboard 01, connect the output terminals of the motherboard 01 to the corresponding pair of sockets in the wiring sequence adjustment module 200. For example, as shown by the solid arrow in the figure, connect to input socket 1 and input socket 2, or as shown by the dashed arrow in the figure, connect to input socket 3 and input socket 4 respectively.

[0101] In this embodiment, the adapter circuit 0212 also includes a wiring sequence adjustment module 200. Based on the wiring sequence and interface package of the motherboard 01, a corresponding pair of input sockets in the wiring sequence adjustment module 200 are selected to connect the motherboard 01 and the corresponding pair of input sockets in the wiring sequence adjustment module 200. The module receives the screen display signal and screen control signal output by the motherboard 01 and outputs the received screen display signal and screen control signal to the screen control signal processing module 100 through the two output sockets 202 of the wiring sequence adjustment module 200. This achieves compatibility with motherboards with different wiring sequences or different interface packages, avoiding the cost increase caused by matching multiple screen control signal processing modules 100 to multiple motherboards.

[0102] exist Figure 1 Based on the illustrated embodiment, Figure 5 This is a schematic diagram of the structure of the testing device according to embodiment four of the present invention. The display module 02 includes a second display module 022, as shown below. Figure 5 As shown, the second display module 022 includes a second display panel 0221. The second display panel 0221 is usually a display panel that matches the motherboard 01 and is used during product manufacturing or sales, rather than a general display panel used during debugging or maintenance, such as a P2P display panel. It has a P2P signal interface and conforms to the EPI / ISP / CEDS / USIT / CMPI protocol.

[0103] Since display module 02 is the second display module 022, the control command should be a second control command used to instruct motherboard 01 to generate a signal to the second display panel 0221. Then the output terminal of motherboard 01 is connected to the input terminal of the second display panel 0221.

[0104] The motherboard 01 is used to generate a second screen-on signal and a screen control signal according to the second control instruction; wherein, the second screen-on signal is multiple P2P signal pairs.

[0105] The motherboard 01 is also used to send the second screen signal and screen control signal to the second display panel 022, driving the second display panel 022 to display.

[0106] exist Figures 1 to 5 Based on the illustrated embodiment, Figure 6 This is a schematic diagram of the structure of the testing device in embodiment five of the present invention, as shown in the figure. Figure 6 As shown, the motherboard 01 includes: a main chip 011, a power management PMU module 012, a gamma correction module 013, a level conversion module 014, and an output socket 015.

[0107] Optionally, the main chip 011 is an integrated chip of a system on chip (SOC) and a TCON chip, or a combination chip of SOC and TCON chip, or an SOC with integrated TCON chip functionality.

[0108] The power supply control pin VCC_Panel_control of the main chip 011 is connected to the power supply pin VCC_Panel of the PMU module 012, providing power supply voltage to the PMU module 012. The main chip 011 is connected to the bus pins (e.g., I2C_SDA, I2C_SCL) of the PMU module 012 and the GAMMA module 013 via bus pins (e.g., I2C_SDA, I2C_SCL), communicating with the PMU module 012 and the GAMMA module 013. The main chip 011 is connected to the level converter via drive control pins (e.g., Panel_LC, Panel_YDIO, Panel_TER, Panel_Yclk). The input pins of module 014 (e.g., Panel_LC, Panel_YDIO, Panel_TER, Panel_Yclk) are connected to send drive control signals to level shift module 014; PMU module 012 (e.g., VDDA and VDDD pins) is connected to GAMMA module 013 (e.g., VDDA and VDDD pins); output socket 015 is connected to the screen output pins of main chip 011 (e.g., P2P_0N to P2P11N, P2P_0P to P2P_11P), and is also connected to the output pins of PMU module 012, GAMMA module 013, and level shift module 014.

[0109] Optionally, output socket 015 includes two 60-pin sockets, XP1 and XP2.

[0110] The main chip 011 is used to generate the screen display signal and screen control signal according to the control instructions.

[0111] PMU module 012 is used to output voltage control signals according to control signals. The voltage control signals can power the display panel. For example, the voltage control signals include VCOM voltage signals, VGH voltage signals, VGL voltage signals, VDDA and VDDD voltage signals, etc.

[0112] GAMMA module 013 is used to generate GAMMA voltage signals based on control signals, such as VDDA and VDDD voltage signals, and output GAMMA voltage signals, such as VG1, VG7, VG8, and VG14.

[0113] Levelshift module 014 is used to perform level conversion on control signals sent by main chip 011, such as Panel_LC, Panel_YDIO, Panel_TER, Panel_Yclk, CPV1, CPV2, etc., and output the converted drive control signals, such as HC1~HC8, ST1, LC1, LC2 and VSS_XON.

[0114] In one specific implementation, the motherboard 01 generates a drive control voltage corresponding to the display module based on the acquired control instructions. This drive control voltage can be a timing control signal. Figure 7 The diagram illustrates the gate operation timing of a display panel according to the present invention. For example, the main chip 011 generates control signals, such as CPV1 and CPV2, based on control instructions. CPV1 and CPV2 are inputs to the Levelshift module on the panel side, jointly determining the timing control CLK (CLK1-CLK6) signals. The falling edge of CPV1 marks the start of CLK1, and the rising edge of CPV2 marks the end of CLK1, and so on until all 2160 lines are scanned. The Levelshift module generates and outputs the timing control signals (CLK1-CLK6) based on the CPV1 and CPV2 signals and the preset STV (used to control the gate operation timing of each frame of the panel; active low, reset high) signal. Figure 7 CLK1-CLK6 are the working timing sequence of the 2160th line Gate, which serves as the output of the Levelshift chip. The high level is VGH and the low level is VGL (negative voltage).

[0115] Furthermore, before the adapter circuit 0212 receives the screen control signal sent by the motherboard 01, it is necessary to divide the voltage of each signal. This solution provides a sampling circuit, which includes multiple sampling modules such as... Figure 8 The voltage divider circuit provided by the present invention is configured in the adapter circuit 0212 and connected to each signal input terminal of the adapter circuit to adjust the screen control signal output by the motherboard 01 to the input voltage range of the analog-to-digital conversion submodule. The voltage divider circuit includes resistors R1, R2, and R3; one end of resistor R2 is grounded, and the other end is connected to one end of resistor R1 and one end of R3 respectively. The other end of R1 is connected to the corresponding signal pin in the input socket of the adapter circuit, and the other end of R3 is connected to the analog-to-digital conversion module 201. Different resistance values ​​are set for different signals. Taking the voltage control signal VDDA as an example, this signal supplies power to the display panel through a chip-on-flex (COF) film. Its voltage range varies depending on the panel, generally between 14-18V. However, the input voltage range of the analog-to-digital converter module is below 10V. Therefore, a voltage divider circuit is needed to meet the requirements. Optional resistors are R1 = 10k ohms, R2 = 10k ohms, and R3 = 47k ohms. For another example, if the tested CLK1 signal output is VGL, i.e., -5.5V, the same approach is still used... Figure 8The voltage divider circuit, optionally, uses R1, R2, and R3, all of which are 100K ohms, to adjust CLK1 to meet the input voltage range of the analog-to-digital converter module. This solution uses different voltage divider resistors for different input signals of the mainboard 01 to accommodate the sampling circuit design of positive and negative voltages on various panels.

[0116] For example, the analog-to-digital converter (ADC) chip used in this solution is the ADS8688DBT, which supports 8 signal inputs, has 16-bit ADC processing capability with SPI communication, and input voltages ranging from ±10V, ±5V, ±2.5V, 0 to 10V, and 0 to 5V. The chip operates at 5V. Optionally, five ADS8688DBT chips can be used. When the chip is working, both positive and negative voltages acquired can be input to the ADS8688DBT through a differential signal input interface, i.e., one voltage signal and one reference level signal.

[0117] Figure 9 This is a schematic diagram of the hardware structure of a motherboard provided in an embodiment of the present invention. Figure 9 As shown, the motherboard 200 includes:

[0118] Processor 201, memory 202, and computer program;

[0119] Optionally, the processor 201 is specifically the main chip in this solution, and the memory 202 is specifically Double Data Rate Synchronous Dynamic Random Access Memory (DDR) and / or Embedded Multi Media Card (EMMC).

[0120] The computer program is stored in the memory 202, and the processor 201 executes the computer program to implement the control method of the display panel described in any method embodiment.

[0121] Figure 9 As a simple motherboard design, embodiments of the present invention do not limit the number of processors and memory in the motherboard. Figure 9 The example is only given when the number is 1.

[0122] Alternatively, the memory 202 can be either standalone or integrated with the processor 201.

[0123] When the memory 202 is set up independently, the motherboard also includes a bus 203 for connecting the memory 202 and the processor 201.

[0124] This invention also provides a computer-readable storage medium storing computer-executable instructions. When a processor executes the computer-executable instructions, it implements the display panel control method described above.

[0125] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test device, characterized by The device comprises a mainboard and a display module connected with the mainboard, the mainboard is internally provided with a screen driving circuit, the display module comprises a display panel and a first display module, the first display module comprises a first display panel and a conversion circuit connected with the first display panel; The conversion circuit is used for providing a power supply voltage for the first display panel; The mainboard is used for obtaining a control instruction, the control instruction is a detection result obtained by the mainboard detecting a user operation and a preset file, and the specification information of the display module to be controlled is determined according to the detection result, and the control instruction is generated according to the specification information; wherein the specification information comprises at least one of data format, control signal, interface type and protocol type; the control instruction comprises a screen parameter to be set; if the control instruction is a first control instruction used for instructing the mainboard to generate a signal corresponding to the first display panel, an output end of the mainboard is connected with an input end of the first display panel through the conversion circuit; The mainboard is used for generating a first on-screen signal and a screen control signal according to the first control instruction; wherein the first on-screen signal is 8 groups of differential signal pairs conforming to the digital interface standard VbyOne; the first display panel has a VbyOne interface; The screen control signal comprises a gamma correction (GAMMA) voltage, a voltage control signal for providing power supply for the display panel, and a driving control voltage for driving the display panel to display; The mainboard is further used for sending the first on-screen signal through the conversion circuit; The display module is configured to display according to the first on-screen signal and / or the screen control signal.

2. The apparatus of claim 1, wherein, The device further comprises a control signal detection module; The mainboard is connected with the control signal detection module through the conversion circuit; The conversion circuit is used for performing signal conversion on the screen control signal sent by the mainboard, and then sending the screen control signal to the control signal detection module; The control signal detection module is used for detecting whether the screen control signal is normal.

3. The apparatus of claim 2, wherein, The conversion circuit comprises a screen control signal processing module; The screen control signal processing module comprises an analog-to-digital conversion submodule, a micro control unit (MCU) submodule and a level conversion submodule; The MCU submodule is connected with the analog-to-digital conversion submodule and the level conversion submodule respectively; The analog-to-digital conversion submodule is used for converting the screen control signal from an analog signal to a digital signal; The MCU submodule is used for obtaining the digital signal and sending the digital signal to the level conversion submodule; The level conversion submodule is used for boosting the digital signal.

4. The apparatus of claim 3, wherein, The conversion circuit further comprises a line sequence arrangement module; The line sequence arrangement module is connected between the mainboard and the screen control signal processing module, and comprises a plurality of input sockets and two output sockets; The line sequence arrangement module is used for matching the line sequence of the output end of the mainboard with the line sequence of the input end of the screen control signal processing module.

5. The apparatus of claim 2, wherein, The conversion circuit comprises an input socket, an output socket and a power supply module; The adapter circuit is connected with the output socket of the mainboard through the input socket, and receives the first on-screen signal and the screen control signal sent by the mainboard; The adapter circuit is connected with the input socket of the first display panel through the output socket; The adapter circuit sends the first on-screen signal to the on-screen signal input pin of the input socket of the first display panel through the on-screen signal output pin in the output socket; The power supply module is connected with the power pin of the input socket of the first display panel through the power supply pin of the output socket, and provides power voltage for the first display panel.

6. The apparatus of claim 5, wherein, The input socket of the adapter circuit is two 60pin sockets, and the output socket of the adapter circuit is a 51pin socket.

7. The apparatus of claim 5, wherein, The adapter circuit further comprises a control signal output end; The control signal output end is connected with the input end of the control signal detection module; The adapter circuit sends the screen control signal to the control signal detection module through the control signal output end.

8. The apparatus of claim 1, wherein, The display module comprises a second display module, and the second display module comprises a second display panel; if the control instruction is a second control instruction used for instructing the mainboard to generate a signal corresponding to the second display panel, the output end of the mainboard is connected with the input end of the second display panel; The mainboard is used for generating a second on-screen signal and the screen control signal according to the second control instruction; wherein the second on-screen signal is a plurality of P2P signal pairs; the second display panel has a plurality of P2P signal interfaces; The mainboard is further used for sending the second on-screen signal and / or the screen control signal to the second display panel, and driving the second display panel to display.

9. The apparatus of claim 1 or 8, wherein, The mainboard comprises a main chip, a power management (PMU) module, a gamma correction (GAMMA) module, a level conversion module and an output socket; the main chip is an integrated chip of a SOC and a TCON chip; The power supply control pin of the main chip is connected with the power pin of the PMU module, and provides power voltage for the PMU module; the main chip is connected with the bus pins of the PMU module and the GAMMA module through the bus pins, and communicates with the PMU module and the GAMMA module; the main chip is connected with the input pin of the level conversion module through the driving control pin, and sends a driving control signal to the level conversion module; the PMU module is connected with the GAMMA module; the output socket is connected with the on-screen signal output pin of the main chip, and is connected with the output pins of the PMU module, the GAMMA module and the level conversion module; The main chip is used for generating the on-screen signal and the control signal according to the control instruction; The PMU module is used for outputting the voltage control signal according to the control signal; The GAMMA module is used for outputting a GAMMA voltage signal according to the control signal; The level conversion module is used for performing level conversion on the control signal sent by the main chip to obtain a driving control signal, and outputting the driving control signal.

Images