OLED display screen driving circuit and OLED display device

Abstract

The invention relates to an OLED display screen driving circuit, and the circuit comprises a driving module which is used for generating a driving induction signal, and is provided with a first input end, and the first input end is connected to a data signal output end; the response module is connected to the driving module and is used for lightening the OLED display screen based on the driving induction signal; the reset module is connected to the driving module and the response module and is used for performing reset processing on the response module; and the pre-charging module is used for providing pre-charging voltage for the OLED display screen before the driving module drives the OLED display screen to emit light so as to charge an equivalent capacitor of the OLED display screen. The driving module generates a signal and transmits energy through the coupler; the response module lightens the OLED; and the reset module resets the circuit after ending. The OLED display screen driving circuit highlights the advantages of non-contact energy transmission, reduces electromagnetic interference and improves efficiency, and is suitable for high-resolution OLED display equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, in particular to an OLED display screen driving circuit and an OLED display device. BACKGROUND

[0002] With the rapid development of televisions, the traditional LCD display screen has reached a bottleneck, and now the organic electroluminescence display (OLED) is the object of vigorous development, and it is expected to replace LCD in the future.

[0003] Currently, the OLED display screen structure usually uses a combination of a clock signal and a data signal to power the internal light-emitting device when starting, and then lights up the display screen. However, the current method has a time delay and requires a response time to light up the entire screen. At the same time, the current is too large when using the signal to power, which poses a risk of screen flashing. This makes the slow driving of the OLED display screen bring a bad experience to the user and affects the user experience. SUMMARY

[0004] Therefore, it is necessary to provide an OLED display screen driving circuit and a display device to solve the problem of low brightness of the OLED light-emitting.

[0005] An OLED display screen driving circuit comprises:

[0006] a driving module configured to generate a driving sensing signal, wherein the driving module has a first input end connected to a data signal output end;

[0007] a response module connected to the driving module and configured to light up an OLED display screen based on the driving sensing signal;

[0008] a reset module connected to the driving module and the response module and configured to reset the response module; and

[0009] a pre-charging module configured to provide a pre-charging voltage to the OLED display screen before the driving module drives the OLED display screen to emit light, so as to charge an equivalent capacitor of the OLED display screen.

[0010] In one preferred embodiment, the pre-charging module comprises:

[0011] a first transistor having one end connected to the OLED display screen;

[0012] a first voltage source electrically connected to the first transistor and configured to be connected to an anode of the OLED display screen through the first transistor; and

[0013] A controller is configured to control the first transistor to be in an on state before the driving module drives the OLED display to light up.

[0014] In one preferred embodiment, the driving module comprises:

[0015] A second transistor, a gate of which is connected to the gate signal output end, and a drain of which is connected to the data signal output end, the second transistor being configured to control the data signal output end through the gate signal output end; and

[0016] A first inductor, one end of which is connected to the source of the first transistor.

[0017] In one preferred embodiment, the driving module further comprises:

[0018] A third transistor, which is connected between the second transistor and the first inductor, a gate of the third transistor being connected to the EM signal end, and the third transistor being configured to protect the circuit of the driving module.

[0019] In one preferred embodiment, the driving module further comprises:

[0020] A fourth transistor, which is connected to one end of the drain of the second transistor, and is configured to control the on-off of the drain of the fourth transistor.

[0021] In one preferred embodiment, the response module comprises:

[0022] A second inductor, which is arranged opposite to the first inductor;

[0023] A second capacitor, which is connected in parallel to the second inductor, and the OLED display, the second inductor and the second capacitor forming a parallel circuit.

[0024] In one preferred embodiment, the reset module comprises:

[0025] A fifth transistor, a source of which is connected to the anode of the OLED, and a gate of which is connected to the reset signal;

[0026] A sixth transistor, a source of which is connected to the drain of the third transistor, and a gate of which is connected to the reset signal.

[0027] The OLED display driving circuit disclosed in the embodiment uses the pre-charging module to pre-charge, and then the driving module generates a signal and transmits energy through the coupler; the response module lights up the OLED; and the reset module resets the circuit after the end. The OLED display driving circuit highlights the advantage of non-contact energy transmission, reduces electromagnetic interference and improves efficiency, and is suitable for high-resolution OLED display devices.

[0028] The OLED display device comprises an OLED display screen and the OLED display screen driving circuit.

[0029] The OLED display device disclosed in the embodiment utilizes the OLED display screen driving circuit to generate signals by the driving module and transmit energy through the coupler after pre-charging by the pre-charging module; the responding module lights up the OLED; and the reset module resets the circuit after ending. The OLED display screen driving circuit highlights the advantage of non-contact energy transmission, reduces electromagnetic interference and improves efficiency, and is suitable for high-resolution OLED display devices. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The module schematic diagram of the OLED display screen driving circuit in the first preferred embodiment of the present application is shown in the figure.

[0031] Figure 2 The circuit schematic diagram of the OLED display screen driving circuit in the first preferred embodiment of the present application is shown in the figure.

[0032] Figure 3 The module schematic diagram of the OLED display device in the second preferred embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0034] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for the purpose of illustration only and are not intended to be limiting.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] As Figure 1As shown, the first preferred embodiment of the present application discloses an OLED display screen driving circuit 100, which comprises a driving module 110, a response module 120, a reset module 130 and a pre-charge module 140.

[0037] The driving module 110 is used for generating a driving induction signal, and has a first input end connected to a data signal Vdata output end.

[0038] Specifically, in combination with Figure 1 and Figure 2 As shown, the driving module 110 comprises a second transistor T2 and a first inductor L1. The gate of the second transistor T2 is connected to a gate signal output end, the drain of the second transistor T2 is connected to the data signal Vdata output end, and the second transistor T2 controls the data signal Vdata output end through the gate signal output end. One end of the first inductor L1 is connected to the source of the first transistor T2. The second transistor T2 is used for controlling the on-off of the data signal.

[0039] More specifically, the driving module 110 further comprises a third transistor T3 connected between the second transistor T2 and the first inductor L1. The gate of the third transistor T3 is connected to an EM signal end, and is used for protecting the circuit of the driving module 100. In abnormal working conditions (such as overvoltage, surge), the connection between the second transistor T2 and the first inductor L1 is cut off to prevent the fault current from damaging the second transistor T2 and the subsequent circuit. In abnormal working conditions (such as overvoltage or surge), the connection between T2 and L1 is cut off to prevent the fault current from damaging T2 and the subsequent circuit, significantly enhancing the anti-interference ability and reliability of the circuit, especially in complex electromagnetic environments.

[0040] The driving module 110 further comprises a fourth transistor T4 connected to one end of the drain of the second transistor T2, for controlling the on-off of the drain of the fourth transistor T4. The fourth transistor T4 is used for optimizing the switching loss or avoiding the drain voltage spike.

[0041] The response module 120 is connected to the driving module 110, and is used for lighting the OLED display screen based on the driving induction signal.

[0042] Specifically, the response module 120 includes a second inductor L2 and a second capacitor C2. The second inductor L2 is arranged opposite to the first inductor L1. The first inductor L1 and the second inductor L2 form a coupler for non-contact energy transmission, so as to realize non-contact energy transmission, improve energy transmission efficiency, and reduce physical loss. The second capacitor C2 is connected in parallel with the second inductor L2. The OLED display screen, the second inductor L2, and the second capacitor C2 form a parallel circuit. The second capacitor C2 is used for resonance adjustment and energy storage, and ensures that the OLED is quickly and stably lighted.

[0043] The response module 120 is designed through a coupler, so as to realize efficient energy induction and conversion, and reduce circuit complexity.

[0044] The reset module 130 is connected to the driving module 110 and the response module 120, and is used for resetting the response module 110.

[0045] In the embodiment, the reset module 130 includes a fifth transistor T5 and a sixth transistor T6. The source of the fifth transistor T5 is connected to the anode of the OLED. The gate of the fifth transistor T5 is connected to a reset signal. The source of the sixth transistor T6 is connected to the drain of the third transistor. The gate of the sixth transistor T6 is connected to the reset signal. The circuit uses the reset module 130 to enhance the reliability and service life of the circuit through a reset mechanism.

[0046] The pre-charging module 140 is used for providing a pre-charging voltage to the OLED display screen before the driving module 110 drives the OLED display screen to emit light, so as to charge the equivalent capacitor of the OLED display screen.

[0047] Specifically, the pre-charging module 140 includes a first transistor T1, a first voltage source 141, and a controller 142. One end of the first transistor T1 is connected to the OLED display screen. The first voltage source 141 is electrically connected to the first transistor T1, and is connected to the anode of the OLED display screen through the first transistor T1. The controller 142 is used for controlling the first transistor T1 to be in an on state before the driving module 110 drives the OLED display screen to emit light.

[0048] A pre-charge voltage is provided by the pre-charge module 140 to charge the equivalent capacitance of the OLED before the driving module 110 activates the OLED, thereby shortening the lighting delay. The pre-charge module 140 includes a first transistor T1 connected to the anode of the OLED display screen, which serves as a switch to control the pre-charge process. A first voltage source 141 is connected to the anode of the OLED through the first transistor T1 to provide an initial voltage. The controller 142 controls the on-off state of T1 before the driving module activates the OLED, and dynamically adjusts the pre-charge voltage to avoid overshoot or undervoltage. The above-mentioned driving module 110 optimizes the response speed and energy efficiency of the OLED.

[0049] The present embodiment discloses that the OLED display screen driving circuit 100 uses the pre-charge module 140 to charge in advance, and then the driving module 110 generates a signal and transmits energy through the coupler; the response module 120 lights up the OLED; and the reset module 130 resets the circuit after the end. The OLED display screen driving circuit 100 highlights the advantages of non-contact energy transmission, reduces electromagnetic interference and improves efficiency, and is suitable for high-resolution OLED display devices.

[0050] In combination Figure 3 The second preferred embodiment of the present application discloses an OLED display device 10, which includes the OLED display screen 200 and the OLED display screen driving circuit 100 described above.

[0051] The present embodiment discloses that the OLED display device 10 uses the OLED display screen driving circuit 100 to charge in advance using the pre-charge module 140, and then the driving module 110 generates a signal and transmits energy through the coupler; the response module 120 lights up the OLED; and the reset module 130 resets the circuit after the end. The OLED display screen driving circuit 100 highlights the advantages of non-contact energy transmission, reduces electromagnetic interference and improves efficiency, and is suitable for high-resolution OLED display devices.

[0052] The technical features of the above-mentioned embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0053] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. An OLED display screen driving circuit, characterized in that: include: A driving module, configured to generate a driving sensing signal, wherein the driving module has a first input terminal connected to the data signal output terminal; A response module, connected to the driving module, configured to light up the OLED display screen based on the driving sensing signal; a reset module, connected to the driving module and the response module, and configured to reset the response module; and The pre-charging module is used to provide a pre-charging voltage to the OLED display before the driving module drives the OLED display to emit light, so as to charge the equivalent capacitance of the OLED display.

2. The OLED display driving circuit according to claim 1, wherein: The pre-charge module includes: A first transistor, one end of which is connected to the OLED display screen; a first voltage source electrically connected to the first transistor, and configured to be connected to an anode of the OLED display through the first transistor; and The controller is used to control the first transistor to be on before the driving module drives the OLED display screen to light up.

3. The OLED display driving circuit according to claim 1, wherein: The driving module includes: a second transistor, a gate of which is connected to the gate circuit signal output terminal, a drain of which is connected to the data signal output terminal, and the second transistor controls the data signal output terminal through the gate circuit signal output terminal; and One end of the first inductor is connected to the source of the first transistor.

4. The OLED display driving circuit according to claim 3, wherein: The driving module further includes: A third transistor is connected between the second transistor and the first inductor coil, and a gate of the third transistor is connected to the EM signal terminal, and is used to protect the circuit of the driving module.

5. The OLED display driving circuit according to claim 3, wherein: The driving module further includes: The fourth transistor is connected to one end of the drain of the second transistor and is used to control the on and off of the drain of the fourth transistor.

6. The OLED display driving circuit according to claim 3, wherein: The response module includes: a second inductor coil, arranged opposite to the first inductor coil; A second capacitor is connected in parallel with the second inductor coil, and the OLED display screen, the second inductor coil and the second capacitor form a parallel circuit.

7. The OLED display driving circuit according to claim 3, wherein: The reset module includes: a fifth transistor, having a source connected to the anode of the OLED and a gate connected to a reset signal; The sixth transistor has a source connected to the drain of the third transistor and a gate connected to the reset signal.

8. An OLED display device, characterized in that: It comprises an OLED display screen and the OLED display screen driving circuit according to any one of claims 1 to 7.

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