Direct light-emitting display screen, light-emitting control method and electronic equipment

Abstract

The invention relates to the technical field of display screen driving, and discloses a direct-light-emitting display screen, a light-emitting control method and electronic equipment, and the direct-light-emitting display screen comprises a clock signal generation source and at least one light-emitting implementation device, each light-emitting implementation device at least comprises a first light-emitting element group, a second light-emitting element group, a first driving circuit and a second driving circuit, and the first driving circuit drives a first light-emitting element to emit light according to an initial clock signal provided by a clock signal generation source; performing signal delay operation on the initial clock signal according to a predetermined delay duration to obtain a delayed clock signal; the second driving circuit drives the second light-emitting element to emit light according to the delayed clock signal. Visibly, the direct light-emitting display screen can realize the light-emitting driving function under the condition that only one clock line is adopted to provide the clock signal for the light-emitting realization device, so that the connection complexity of each functional module of the direct display screen and the wiring complexity of a PCB (Printed Circuit Board) are simplified, and the overall cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen driving, and in particular to a direct light emitting display screen, a light emitting control method and an electronic device. Background Art

[0002] At present, LED direct light display technology is a technology that uses LED (light emitting diode) as a light-emitting element and drives the LED to emit light directly through current to realize image display. The screen using this technology is a direct light display screen (direct display screen). With the development of micro-luminescent LED displays, the resolution requirements for direct display screens are getting higher and higher, that is, for direct display screens of the same size, the number of pixels required is gradually increasing.

[0003] In actual applications, the pixels on the direct display screen are arranged in an array, and each pixel is composed of three LEDs: red, green, and blue. Each pixel has a corresponding driver to drive the LED of the corresponding pixel to emit light. Among them, each driver needs a clock signal to realize the function of driving the LED to emit light, and the driver can obtain the clock signal through the clock line.

[0004] In actual operation, each row of drivers in the array needs to be connected to a different clock line. As the demand for the number of pixels in the direct display screen increases, more clock interfaces and clock lines need to be configured in the direct display screen. However, if more clock interfaces and clock lines are configured, the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring will increase, resulting in an increase in overall cost. Summary of the invention

[0005] The present invention provides a direct-light emitting display screen, a light emitting control method and an electronic device, which can realize the function of driving light emission by using only one clock line to provide a clock signal to a light emitting implementation device, thereby simplifying the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring, and reducing the overall cost.

[0006] The first aspect of the present invention discloses a direct light emitting display screen, the direct light emitting display screen comprises a clock signal generating source and at least one light emitting implementation device, each of the light emitting implementation devices comprises at least: A first light emitting element group and a second light emitting element group; a first drive circuit, wherein a clock signal input terminal of the first drive circuit is electrically connected to the clock signal generating source, a drive control terminal of the first drive circuit is electrically connected to the first light-emitting element group, and a voltage terminal of the first drive circuit is used to connect to a power supply; a second drive circuit, wherein a clock signal input terminal of the second drive circuit is electrically connected to a clock signal output terminal of the first drive circuit, a drive control terminal of the second drive circuit is electrically connected to the second light-emitting element group, and a voltage terminal of the second drive circuit is used to connect to a power supply; Among them, the clock signal generating source is used to provide an initial clock signal; the first driving circuit is used to drive the first light-emitting element in the first light-emitting element group to emit light according to the initial clock signal, and to perform a signal delay operation on the initial clock signal according to a predetermined delay time to obtain a delayed clock signal; the second driving circuit is used to drive the second light-emitting element in the second light-emitting element group to emit light according to the delayed clock signal.

[0007] As an optional embodiment, in the first aspect of the present invention, the second light-emitting element group includes at least one second light-emitting element; The second driving circuit comprises: a driving unit electrically connected to each of the second light-emitting elements respectively, and a driving control end of each of the driving units is electrically connected to the corresponding second light-emitting element; when the number of all the second light-emitting elements is multiple, all the driving units are connected in sequence; Wherein, a clock signal input terminal of a first driving unit among all the driving units is electrically connected to a clock signal output terminal of the first driving circuit; For any driving unit of all the driving units except the first driving unit, a clock signal input terminal of the driving unit is electrically connected to a clock signal output terminal of a previously connected driving unit; For any driving unit except the last driving unit, a clock signal output terminal of the driving unit is electrically connected to a clock signal input terminal of a driving unit connected thereafter; For any driving unit except the last driving unit of all the driving units, the driving unit is used to perform a signal delay operation on the received current clock signal according to the delay time to obtain a delayed clock signal, and provide the delayed clock signal to the subsequent driving unit connected to the driving unit; if the driving unit is the first driving unit, the current clock signal it receives is the clock signal provided by the first driving circuit; For any of the driving units, the driving unit is used to drive the second light-emitting element correspondingly connected to the driving unit to emit light according to the received current clock signal.

[0008] As an optional implementation, in the first aspect of the present invention, the first driving circuit is further used to control the write strobe duration of the control data received by the first driving circuit according to the delay duration; The driving unit is further configured to control a write-enabling duration of control data received by the driving unit according to the delay duration.

[0009] As an optional implementation, in the first aspect of the present invention, the direct light emitting display screen further includes: A data control circuit, wherein the data control circuit is electrically connected to a data input terminal of the first driving circuit and a data input terminal of the second driving circuit respectively; wherein the data control circuit is used to send the determined delay duration to the data input terminal of the first driving circuit and the data input terminal of the second driving circuit.

[0010] As an optional implementation, in the first aspect of the present invention, the direct light emitting display screen further includes: A color difference calibration circuit, wherein the color difference calibration circuit is electrically connected to the first light-emitting element group and the second light-emitting element group, respectively; wherein the color difference calibration circuit is used to obtain the luminous chromaticity data of all first light-emitting elements and / or all second light-emitting elements, and perform a color difference adjustment operation on the first light-emitting elements and / or second light-emitting elements to be adjusted according to a preset color difference adjustment rule and all the luminous chromaticity data.

[0011] The second aspect of the present invention discloses a light emitting control method, which is applied to a direct light emitting display screen, wherein the direct light emitting display screen includes a clock signal generating source and at least one light emitting implementation device, each of the light emitting implementation devices includes a plurality of driving units connected in sequence and a light emitting unit electrically connected to each of the driving units; wherein the method includes: For any of the driving units, determining a target parameter corresponding to the driving unit, wherein the target parameter is used to determine a source of a clock signal based on which the driving unit drives the light-emitting unit electrically connected thereto to emit light; For any of the driving units, determining a target clock signal source according to a target parameter corresponding to the driving unit, and determining a target clock signal provided by the target clock signal source as a clock signal based on which the driving unit drives the light-emitting unit electrically connected thereto to emit light; For any of the driving units, when the target parameter corresponding to the driving unit is the first parameter, the corresponding target clock signal source is the clock signal generating source; when the target parameter corresponding to the driving unit is not the first parameter, the corresponding target clock signal source is the previous driving unit connected to the driving unit.

[0012] As an optional implementation, in the second aspect of the present invention, after determining the target clock signal source according to the target parameter corresponding to the driving unit, and determining the target clock signal provided by the target clock signal source as the clock signal based on which the driving unit drives the light-emitting unit electrically connected thereto to emit light, the method further includes: For any driving unit except the last driving unit, a delay operation is performed on the current clock signal provided by the determined target clock signal source according to a predetermined delay time to obtain a delayed clock signal, and the delayed clock signal is provided to the subsequent driving unit connected to the driving unit.

[0013] As an optional implementation, in the second aspect of the present invention, before performing a delay operation on the current clock signal provided by the determined target clock signal source according to the predetermined delay time to obtain a delayed clock signal, the method further includes: Determine the delay duration; Wherein, determining the delay duration includes: Obtaining a target number of the driving units and a target screen refresh rate of the direct-light display screen; The delay duration is determined according to the target number of the driving units and the target screen refresh rate.

[0014] As an optional implementation, in the second aspect of the present invention, after performing a delay operation on the current clock signal provided by the determined target clock signal source according to the predetermined delay time to obtain a delayed clock signal, and before providing the delayed clock signal to a subsequent driving unit connected to the driving unit, the method further includes: For any of the driving units, the write strobe duration of the control data received by the driving unit is controlled according to the delay duration.

[0015] The third aspect of the present invention discloses an electronic device, which includes: a device body and the direct light-emitting display screen disclosed in the first aspect of the present invention.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The direct-light display screen of the present invention can realize the function of driving light emission by using only one clock line to provide a clock signal to the light emission implementation device, thereby simplifying the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring, thereby reducing the overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a direct light-emitting display screen disclosed in an embodiment of the present invention; Figure 2 It is a schematic structural diagram of another direct-light-emitting display screen disclosed in an embodiment of the present invention; Figure 3 It is a circuit principle diagram of a direct light-emitting display screen disclosed in a specific embodiment of the present invention; Figure 4 A signal control timing diagram of a driver disclosed in a specific embodiment of the present invention that performs data synchronization by a clock pulse on an external clock line to realize light-emitting drive control; Figure 5 A signal control timing diagram of a driver disclosed in a specific embodiment of the present invention, in which a clock signal of a gating function on an external clock line controls an internal clock signal of the driver to perform data synchronization to realize light-emitting drive control; Figure 6 It is a flow chart of a light emitting control method disclosed in an embodiment of the present invention.

[0019] Reference numerals: A clock signal generating source 110 , a light emitting device 100 , a first light emitting element group 101 , a second light emitting element group 102 , a second light emitting element 1021 , a first driving circuit 103 , a second driving circuit 104 , and a driving unit 1041 . DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or ends.

[0022] It should be noted that, unless otherwise clearly specified and limited, the term "electrical connection" in the specification and claims of the present invention and the above-mentioned drawings should be understood in a broad sense, for example, it can be a fixed electrical connection, a detachable electrical connection, or an integral electrical connection; it can be a mechanical electrical connection, an electrical electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] At present, LED direct light display technology is a technology that uses LED (light emitting diode) as a light-emitting element and drives the LED to emit light directly through current to realize image display. The screen using this technology is a direct light display screen (direct display screen). With the development of micro-luminescent LED displays, the resolution requirements for direct display screens are getting higher and higher, that is, for direct display screens of the same size, the number of pixels required is gradually increasing.

[0025] In actual applications, the pixels on the direct display screen are arranged in an array, and each pixel is composed of three LEDs: red, green, and blue. Each pixel has a corresponding driver to drive the LED of the corresponding pixel to emit light. Among them, each driver needs a clock signal to realize the function of driving the LED to emit light, and the driver can obtain the clock signal through the clock line.

[0026] In actual operation, each row of drivers in the array needs to be connected to a different clock line. As the demand for the number of pixels in the direct display screen increases, more clock interfaces and clock lines need to be configured in the direct display screen. However, if more clock interfaces and clock lines are configured, the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring will increase, resulting in an increase in overall cost.

[0027] In this regard, the present invention discloses a direct-light emitting display screen, a light-emitting control method and an electronic device, which can realize the function of driving the display screen to emit light by using only one clock line to provide a clock signal, thereby simplifying the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring, and reducing the overall cost.

[0028] Embodiment 1 See also Figure 1 , Figure 1 Schematic diagram of the structure of a direct light-emitting display screen disclosed in an embodiment of the present invention. Figure 1 As shown, the direct light emitting display screen may include a clock signal generating source 110 and at least one light emitting implementation device 100. Each light emitting implementation device 100 includes at least: A first light emitting element group 101 and a second light emitting element group 102; A first driving circuit 103, wherein a clock signal input terminal of the first driving circuit 103 is electrically connected to a clock signal generating source 110, a driving control terminal of the first driving circuit 103 is electrically connected to the first light-emitting element group 101, and a voltage terminal of the first driving circuit 103 is used to access a power supply; A second driving circuit 104, wherein a clock signal input terminal of the second driving circuit 104 is electrically connected to a clock signal output terminal of the first driving circuit 103, a driving control terminal of the second driving circuit 104 is electrically connected to the second light-emitting element group 102, and a voltage terminal of the second driving circuit 104 is used to access a power supply; Among them, the clock signal generating source 110 is used to provide an initial clock signal; the first driving circuit 103 is used to drive the first light-emitting element in the first light-emitting element group 101 to emit light according to the initial clock signal, and to perform a signal delay operation on the initial clock signal according to a predetermined delay time to obtain a delayed clock signal; the second driving circuit 104 is used to drive the second light-emitting element in the second light-emitting element group 102 to emit light according to the delayed clock signal.

[0029] In the embodiment of the present invention, the clock signal generating source 110 is electrically connected to the clock signal input terminal of the first driving circuit 103, the clock signal input terminal of the second driving circuit 104 is electrically connected to the clock signal output terminal of the first driving circuit 103, the first light-emitting element group 101 is electrically connected to the driving control terminal of the first driving circuit 103, and the second light-emitting element group 102 is electrically connected to the driving control terminal of the second driving circuit 104. That is, the initial clock signal provided by the clock signal generating source 110 is only received by the first driving circuit 103, and the clock signal required by the second driving circuit 104 is provided by the first driving circuit 103.

[0030] It should be noted that the first light-emitting element group 101 may include at least one first light-emitting element, and the second light-emitting element group 102 may include at least one second light-emitting element. The number of first light-emitting elements and the number of second light-emitting elements are related to the number of pixels or resolution requirements of the direct display screen, and the embodiment of the present invention does not impose specific restrictions. At the same time, the number of light-emitting implementation devices 100 is also related to the number of pixels or resolution requirements of the direct display screen, and the embodiment of the present invention does not impose specific restrictions. Among them, all first light-emitting elements and second light-emitting elements are arranged at the display end of the direct light-emitting display screen in an m×n array arrangement structure, where m is the number of rows of the array and n is the number of columns of the array. For example, the light-emitting elements in the first row of the array can be configured as first light-emitting elements, and the remaining rows can be configured as second light-emitting elements. The number of m and n is related to the number of pixels or resolution requirements of the direct display screen, and the embodiment of the present invention does not impose specific restrictions. In an embodiment of the present invention, LEDs or micro-luminescent LEDs (Micro LEDs) can be selected as light-emitting elements.

[0031] Further, after receiving the initial clock signal through the clock signal input terminal, the first driving circuit 103 in each light-emitting implementation device 100 generates a corresponding light-emitting driving voltage at the driving control terminal of the first driving circuit 103 based on the initial clock signal to drive the first light-emitting element in the corresponding first light-emitting element group 101 to emit light. At the same time, the first driving circuit 103 also performs a signal delay operation on the received initial clock signal according to a predetermined delay time, and outputs a delayed clock signal at the clock signal output terminal of the first driving circuit 103 after the delay time ends, and the delayed clock signal is received by the second driving circuit 104. The second driving circuit 104 generates a corresponding light-emitting driving voltage at the driving control terminal of the second driving circuit 104 according to the received clock signal to drive the second light-emitting element in the corresponding second light-emitting element group 102 to emit light.

[0032] It can be seen that the embodiment of the present invention can realize the function of driving the light emission by using only one clock line to provide a clock signal to the light emission implementation device 100, thereby simplifying the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring, reducing the overall cost, and at the same time more effectively utilizing the limited volume space of the direct display screen and reducing the waste of volume space.

[0033] In an alternative embodiment, see Figure 2 The second driving circuit 104 includes: a driving unit 1041 electrically connected to each second light-emitting element 1021, and a driving control terminal of each driving unit 1041 is electrically connected to the corresponding second light-emitting element 1021; when the number of all second light-emitting elements 1021 is multiple, all driving units 1041 are connected in sequence; The second light-emitting element group 102 includes at least one second light-emitting element 1021; the clock signal input terminal of the first driving unit 1041 among all the driving units 1041 is electrically connected to the clock signal output terminal of the first driving circuit 103; For any driving unit 1041 except the first driving unit 1041 , the clock signal input terminal of the driving unit 1041 is electrically connected to the clock signal output terminal of the previously connected driving unit 1041 ; For any driving unit 1041 except the last driving unit 1041 , the clock signal output terminal of the driving unit 1041 is electrically connected to the clock signal input terminal of the driving unit 1041 connected later; For any driving unit 1041 except the last driving unit 1041, the driving unit 1041 is used to perform a signal delay operation on the received current clock signal according to the delay time to obtain a delayed clock signal, and provide the delayed clock signal to the subsequent driving unit 1041 connected to the driving unit 1041; if the driving unit 1041 is the first driving unit 1041, the current clock signal it receives is the clock signal provided by the first driving circuit 103; For any driving unit 1041 , the driving unit 1041 is used to drive the second light-emitting element 1021 correspondingly connected to the driving unit 1041 to emit light according to the received current clock signal.

[0034] In this optional embodiment, the second driving circuit 104 in each light-emitting implementation device 100 may include a plurality of driving units 1041, the number of driving units 1041 is related to the number of second light-emitting elements 1021, and each driving unit 1041 is electrically connected to a corresponding second light-emitting element 1021. It is understandable that in the embodiment of the present invention, the number of driving units 1041 included in each light-emitting implementation device 100 may be the same.

[0035] Further, the clock signal input terminal of the first driving unit 1041 is electrically connected to the clock signal output terminal of the first driving circuit 103, and the first driving unit 1041 receives the delayed clock signal output by the first driving circuit 103 through its clock signal input terminal. The clock signal input terminal of any driving unit 1041 except the first driving unit 1041 is electrically connected to the clock signal output terminal of the previously connected driving unit 1041, and the clock signal output terminal of any driving unit 1041 except the last driving unit 1041 is electrically connected to the clock signal input terminal of the subsequently connected driving unit 1041, wherein any driving unit 1041 receives the delayed clock signal output by the previously connected driving unit 1041 through its clock signal input terminal.

[0036] Further, after receiving the current clock signal (i.e., the delayed clock signal output by the last connected driving unit 1041 or the first driving circuit 103), any driving unit 1041 generates a corresponding light-emitting driving voltage at the driving control end of the driving unit 1041 according to the current clock signal to drive the corresponding second light-emitting element 1021 to emit light. At the same time, any driving unit 1041 performs a signal delay operation on the current clock signal according to a predetermined delay time, and outputs a delayed clock signal at the clock signal output end of the driving unit 1041 after the delay time ends. If the driving unit 1041 is not the last driving unit 1041 arranged, the output delayed clock signal is received by the driving unit 1041 connected later.

[0037] It can be seen that the driving unit 1041 in the second driving circuit 104 in this optional embodiment can sequentially perform the delay operation of the clock signal, and sequentially drive the correspondingly connected second light-emitting element 1021 to emit light, thereby providing a circuit structure basis for expanding the number of pixels of the direct-light display screen. At the same time, the direct-light display screen of this optional embodiment can still realize the function of driving the light emission by using only one clock line to provide a clock signal to the light-emitting implementation device 100, thereby further simplifying the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring, reducing the overall cost, and further improving the effective utilization rate of the volume space of the direct display screen, and further reducing the waste of volume space.

[0038] In an alternative embodiment, see Figure 3 , N light-emitting implementation devices 100 may be provided in the direct-light display screen, and the number of the first driving circuits 103 and the driving units 1041 in each light-emitting implementation device 100 is M in total. Among them, a driver may be provided in each first driving circuit 103 and each driving unit 1041, and the driver may be selected as an active matrix driver (Active Matrix Driver, AM Driver). Each first light-emitting element and each second light-emitting element 1021 may be respectively set as an RGB pixel, and an RGB pixel may include three LEDs, namely a red light LED, a green light LED, and a blue light LED, and each driver is connected to a corresponding RGB pixel. The connection relationship of each driver may correspond to the description of the connection relationship between the first driving circuit 103 and the driving unit 1041 in the above embodiment, which will not be repeated here. Thus, it can be obtained as follows Figure 3 The circuit structure of the light emitting elements and the driver arranged in an M×N array is shown.

[0039] In this optional embodiment, taking the light-emitting device 100 of the first column as an example, CLK is the initial clock signal provided by the clock signal generator 110. After receiving the clock signal CLK, the driver AM Driver1_1 corresponding to the first driving circuit 103 drives the corresponding light-emitting element to emit light, and performs a delay operation on the clock signal CLK according to the determined delay time, so as to send the delayed clock signal CLK1_2 to the driver AM Driver1_2 corresponding to the first driving unit 1041 in the second driving circuit 104. After receiving the clock signal CLK1_2, the driver AM Driver1_2 drives the corresponding light-emitting element to emit light, and performs a delay operation on the clock signal CLK1_2 according to the determined delay time, so as to send the delayed clock signal CLK1_3 to the driver AM Driver1_3 corresponding to the next driving unit 1041. And so on, until the driver AM Driver1_M corresponding to the last driving unit 1041 receives the clock signal CLK1_M sent by the previous driver, and drives the corresponding light-emitting element to emit light.

[0040] It can be understood that all drivers in the same row of the light emitting device 100 (eg Figure 3The driving light-emitting operation and delay operation performed by the drivers of the first row (AM Driver1_1 to AM DriverN_1) are synchronized, that is, the drivers of the same row drive the light-emitting elements of the row to emit light after receiving the clock signal, and at the same time perform a delay operation on the clock signal according to the determined delay time, so as to send the delayed clock signal to the driver corresponding to the next row. The configuration method of the delay time may include: if the driver is configured with a clock counter inside, directly timing according to the delay time by the internal clock to control the driver to achieve delay; if the driver is not configured with a clock counter inside, setting an internal timer in the driver, or adding an RC delay circuit or a delay circuit composed of an even number of inverters in the driver, or sending a signal containing delay time information to the driver to control the driver to achieve delay.

[0041] In an optional embodiment, the first driving circuit 103 is further used to control the write enable duration of the control data received by the first driving circuit 103 according to the delay duration; the driving unit 1041 is further used to control the write enable duration of the control data received by the driving unit 1041.

[0042] In this alternative embodiment, see Figure 3 The driver starts the write enable of the control data received by the driver according to the received clock signal, so as to drive the light-emitting elements of the row to emit light, and performs a delay operation on the clock signal according to the determined delay time. After the delay time ends, the driver sends the delayed clock signal to the driver corresponding to the next row, and at the same time, the write enable of the control data received by the driver ends.

[0043] For further information, see Figure 4 , where CLK is the initial clock signal provided by the clock signal generator 110, and CLKX_m is the clock signal received by the mth driver in the Xth column light-emitting device 100. The above clock signals are all pulse signals. Figure 4 It can be seen that each driver performs a delay operation of duration T after receiving the corresponding clock signal, and then sends a clock signal to the next driver after completing the delay operation. At the same time, the current driver stops receiving the clock signal, that is, at this time, the driver drives the corresponding connected light-emitting element to stop emitting light. Repeat the above operation until the driver of the last row drives the corresponding connected light-emitting element to emit light after receiving the clock signal, and after the delay operation of duration T, the driver of the last row stops receiving the clock signal to drive the light-emitting element of the last row to stop emitting light, thereby completing the display process of one frame of the direct light-emitting display screen. After the display process of the first frame of the direct light-emitting display screen is completed, the display of subsequent frames of the direct light-emitting display screen is completed in the above manner.

[0044] It can be seen that in this optional embodiment, each row driver can drive the light-emitting elements of the corresponding row to emit light within the delay time, so that the light-emitting elements of each row in the direct display screen emit light in turn, thereby enabling the direct display screen to complete the display of each frame.

[0045] In an alternative embodiment, see Figure 3 The direct light emitting display screen may further include a data control circuit. The data control circuit is electrically connected to the data input terminal of the first driving circuit 103 and the data input terminal of the second driving circuit 104 respectively; wherein the data control circuit is used to send the determined delay time length to the data input terminal of the first driving circuit 103 and the data input terminal of the second driving circuit 104.

[0046] In this alternative embodiment, see Figure 3 , the driver in each light-emitting implementation device 100 is electrically connected to the data providing end of a corresponding data control circuit, for example Figure 3 The data input terminals of the drivers in the first column of the light emitting implementation device 100 are electrically connected to the data providing terminal D1 of the data control circuit, and the data input terminals of the drivers in the Nth column of the light emitting implementation device 100 are electrically connected to the data providing terminal Dn of the data control circuit.

[0047] Furthermore, since the driving units 1041 included in each light-emitting implementation device 100 are configured to be the same number, the target number of driving units 1041 included in a light-emitting implementation device 100 is equal to the number of rows of the light-emitting element array in the direct-emitting display screen. Based on the number of rows of the light-emitting element array in the direct-emitting display screen (i.e., the target number) and the target screen refresh rate of the required direct-emitting display screen, the delay time required for the delay operation of each driver can be calculated. For example, if the target number S is 100 and the target screen refresh rate R is 60Hz, then 1 second (s) displayed by the direct-emitting display screen includes 60 frames of images, and the required display time of 1 frame of the image is 1 / 60 seconds, then the required delay time for each row of the light-emitting element array of the direct-emitting display screen is 1 / (60×100)=1 / 6000 seconds, that is, the calculated delay time is 1 / 6000 seconds. After determining the delay time, the delay time can be sent to each driver through the data control circuit, and the driver performs the corresponding delay operation according to the delay time.

[0048] It is understandable that the data control circuit can also provide a driving data signal to each driver in each light-emitting implementation device 100, and after receiving the clock signal, the driver drives the corresponding connected light-emitting element to emit light according to the clock signal and the driving data signal. Among them, the driving data signal can be used to: control the light-emitting brightness of the light-emitting element, stabilize the voltage and current of the light-emitting element, and control the color of the RGB pixel by controlling the light-emitting brightness / frequency of the light-emitting elements of different colors in the RGB pixel.

[0049] It can be seen that this optional embodiment can determine the delay duration required for the driver delay operation through the target number of driving units 1041 and the target screen refresh rate of the direct-light display screen, and send the determined delay duration to each driver through the data control circuit, thereby improving the accuracy of the driver's delay operation on the corresponding clock signal.

[0050] In an alternative embodiment, referring to Figure 5 The initial clock signal provided by the clock signal generation source is a selection signal, which can be set to high-level selection or low-level selection. Figure 5 The clock signal shown is a high-level gated clock signal. In this case, for any driver, when the driver receives a high-level gated clock signal, the driver starts the internal clock circuit of the driver. At this time, the internal clock signal of the driver analyzes the received drive data signal DI sent by the data control circuit, thereby realizing the light-emitting drive function.

[0051] Further, in this optional embodiment, in addition to setting an internal timer or delay circuit in the driver as mentioned in the above embodiment, a shift pulse device can be configured in the first driving circuit 103 and each driving unit 1041 of each light-emitting device 100 to realize the delay function of the clock signal. Among them, in display screen applications such as TFT-LCD / OLED, the circuit for realizing the shift pulse signal on the glass substrate is called a GOA circuit or a GIP circuit. The basic principle of the GOA circuit and the GIP circuit is to manufacture a number of TFT devices on the glass substrate through a coating process to realize the pulse shift of the signal.

[0052] In an optional embodiment, the direct light display screen may further include a color difference calibration circuit. The color difference calibration circuit is electrically connected to the first light emitting element group 101 and the second light emitting element group 102 respectively; wherein the color difference calibration circuit is used to obtain the luminous chromaticity data of all first light emitting elements and / or all second light emitting elements 1021, and perform a color difference adjustment operation on the first light emitting elements and / or second light emitting elements 1021 to be adjusted according to a preset color difference adjustment rule and all luminous chromaticity data.

[0053] In this optional embodiment, the color difference calibration circuit can adjust the color difference of the light emitting element by controlling the current flowing through the light emitting element in each RGB pixel, and the color difference adjustment rule can be adaptively configured according to actual needs. It can be seen that this optional embodiment can calibrate the display color difference of the direct light emitting display screen, thereby improving the picture display quality of the direct light emitting display screen.

[0054] Embodiment 2 See also Figure 6 , Figure 6The flowchart of a light emitting control method disclosed in an embodiment of the present invention is shown in FIG. The light emitting control method is applied to a direct light emitting display screen, which includes a clock signal generating source and at least one light emitting implementation device, each of which includes a plurality of driving units connected in sequence and a light emitting unit electrically connected to each driving unit. Figure 6 As shown, the method may include the following steps: 601. For any driving unit, determine a target parameter corresponding to the driving unit, where the target parameter is used to determine a source of a clock signal based on which the driving unit drives a light-emitting unit electrically connected to the driving unit to emit light.

[0055] 602. For any driving unit, determine a target clock signal source according to a target parameter corresponding to the driving unit, and determine a target clock signal provided by the target clock signal source as a clock signal based on which the driving unit drives a light-emitting unit electrically connected thereto to emit light.

[0056] 603. For any driving unit, when the target parameter corresponding to the driving unit is the first parameter, the corresponding target clock signal source is the clock signal generation source; when the target parameter corresponding to the driving unit is not the first parameter, the corresponding target clock signal source is the previous driving unit connected to the driving unit.

[0057] In the embodiment of the present invention, the driving unit may correspond to the first driving circuit and the driving unit in the second driving circuit of the first embodiment. As in the first embodiment, the driving unit may also be configured as a driver. The driving unit can determine the source of the clock signal it receives through the target parameter, for example, referring to Figure 3 , driver AM Driver1_1 can determine the target parameter as the first parameter, that is, the source of the clock signal it receives is the clock signal generation source; driver AM Driver1_3 can determine the target parameter as the first parameter, that is, the source of the clock signal it receives is the previously connected driver AM Driver1_2.

[0058] It can be seen that the embodiment of the present invention can realize the function of driving light emission by using only one clock line to provide a clock signal to the light emission implementation device, thereby simplifying the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring, reducing the overall cost, and at the same time more effectively utilizing the limited volume space of the direct display screen and reducing the waste of volume space.

[0059] In an optional embodiment, after step 502, the method may further include the following steps: For any driving unit except the last driving unit, a delay operation is performed on the current clock signal provided by the determined target clock signal source according to a predetermined delay duration to obtain a delayed clock signal, and the delayed clock signal is provided to the subsequent driving unit connected to the driving unit.

[0060] In this optional embodiment, after determining the source of the target clock signal, any driving unit receives the current clock signal provided by the target clock signal source, performs a delay operation on the current clock signal according to a predetermined delay duration, and provides the delayed clock signal to the subsequent driving unit connected to the driving unit.

[0061] It can be seen that the driving unit in this optional embodiment can sequentially perform the delay operation of the clock signal and sequentially drive the corresponding connected light-emitting elements to emit light, thereby further expanding the number of pixels of the direct-light display screen. At the same time, the direct-light display screen of this optional embodiment can still realize the function of driving the light emission by using only one clock line to provide a clock signal to the light-emitting device, thereby further simplifying the connection complexity of each functional module of the direct display screen and the complexity of PCB wiring, reducing the overall cost, and further improving the effective utilization rate of the volume space of the direct display screen, and further reducing the waste of volume space.

[0062] In an optional embodiment, before performing a delay operation on the current clock signal provided by the determined target clock signal source according to a predetermined delay time to obtain a delayed clock signal, the method may further include the following steps: Determine the delay duration.

[0063] Determining the delay time may specifically include the following steps: Obtaining a target number of the driving units and a target screen refresh rate of the direct-light display screen; The delay duration is determined according to the target number of the driving units and the target screen refresh rate.

[0064] In this optional embodiment, since the driving units included in each light-emitting implementation device are configured to be the same number, the target number of driving units included in a light-emitting implementation device is equal to the number of rows of the light-emitting element array in the direct-light-emitting display screen. Based on the number of rows of the light-emitting element array in the direct-light-emitting display screen (i.e., the target number) and the target screen refresh rate of the required direct-light-emitting display screen, the delay time required for the delay operation of each driver can be calculated. For example, if the target number S is 100 and the target screen refresh rate R is 60Hz, then 1 second (s) displayed by the direct-light-emitting display screen includes 60 frames of images, and the required display time of 1 frame of the image is 1 / 60 seconds, then the required delay time for each row of the light-emitting element array of the direct-light-emitting display screen is 1 / (60×100)=1 / 6000 seconds, that is, the calculated delay time is 1 / 6000 seconds. After determining the delay time, the delay time can be sent to each driver through the data control circuit, and the driver performs the corresponding delay operation according to the delay time.

[0065] It can be seen that this optional embodiment can determine the delay duration required for the driver delay operation through the target number of driving units and the target screen refresh rate of the direct-light display screen, and send the determined delay duration to each driver through the data control circuit, thereby improving the accuracy of the driver's delay operation on the corresponding clock signal.

[0066] In an optional embodiment, after performing a delay operation on the current clock signal provided by the determined target clock signal source according to a predetermined delay time to obtain a delayed clock signal, and before providing the delayed clock signal to a subsequent driving unit connected to the driving unit, the method may further include the following steps: For any driving unit, the write strobe duration of the control data received by the driving unit is controlled according to the delay duration.

[0067] In this alternative embodiment, see Figure 4 , after receiving the corresponding clock signal, the driver of each driving unit starts the write strobe of the control data received by the driver, so as to drive the light-emitting elements of the row to emit light, and the driver of each driving unit performs a delay operation with a delay time of T, and sends a clock signal to the next driver after completing the delay operation, and at the same time, the current driver stops receiving the clock signal, that is, at this time, the driver ends the write strobe of the received control data. Repeat the above operation until the driver of the last row drives the corresponding connected light-emitting elements to emit light after receiving the clock signal, and after the delay operation with a delay time of T, the driver of the last row stops receiving the clock signal to drive the light-emitting elements of the last row to stop emitting light, thereby completing the display process of one frame of the direct light-emitting display screen. After the display process of the first frame of the direct light-emitting display screen is completed, the display of subsequent frames of the direct light-emitting display screen is completed by analogy in the above manner.

[0068] It can be seen that in this optional embodiment, each row driver can drive the light-emitting elements of the corresponding row to emit light within the delay time, so that the light-emitting elements of each row in the direct display screen emit light in turn, thereby enabling the direct display screen to complete the display of each frame.

[0069] Embodiment 3 An electronic device disclosed in an embodiment of the present invention includes a device body and a direct-light-emitting display screen described in an embodiment of the present invention.

[0070] Embodiment 4 An embodiment of the present invention discloses a computer storage medium, which stores computer instructions. When the computer instructions are called, they are used to execute part or all of the steps executed by the light emitting control method described in the second embodiment of the present invention.

[0071] The device embodiments described above are only illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, i.e., they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0072] Through the specific description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on such an understanding, the above technical solution can be essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, and the storage medium includes a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0073] Finally, it should be noted that the direct-light-emitting display screen, light-emitting control method and electronic device disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, which are only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions recorded in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A direct light emitting display screen, characterized in that: The direct light-emitting display screen includes a clock signal generating source and at least one light-emitting implementation device, each of which includes at least: A first light emitting element group and a second light emitting element group; a first drive circuit, wherein a clock signal input terminal of the first drive circuit is electrically connected to the clock signal generating source, a drive control terminal of the first drive circuit is electrically connected to the first light-emitting element group, and a voltage terminal of the first drive circuit is used to connect to a power supply; a second drive circuit, wherein a clock signal input terminal of the second drive circuit is electrically connected to a clock signal output terminal of the first drive circuit, a drive control terminal of the second drive circuit is electrically connected to the second light-emitting element group, and a voltage terminal of the second drive circuit is used to connect to a power supply; Among them, the clock signal generating source is used to provide an initial clock signal; the first driving circuit is used to drive the first light-emitting element in the first light-emitting element group to emit light according to the initial clock signal, and to perform a signal delay operation on the initial clock signal according to a predetermined delay time to obtain a delayed clock signal; the second driving circuit is used to drive the second light-emitting element in the second light-emitting element group to emit light according to the delayed clock signal.

2. The direct light emitting display screen according to claim 1, characterized in that: The second light emitting element group includes at least one second light emitting element; The second driving circuit comprises: a driving unit electrically connected to each of the second light-emitting elements respectively, and a driving control end of each of the driving units is electrically connected to the corresponding second light-emitting element; when the number of all the second light-emitting elements is multiple, all the driving units are connected in sequence; Wherein, a clock signal input terminal of a first driving unit among all the driving units is electrically connected to a clock signal output terminal of the first driving circuit; For any driving unit of all the driving units except the first driving unit, a clock signal input terminal of the driving unit is electrically connected to a clock signal output terminal of a previously connected driving unit; For any driving unit except the last driving unit, a clock signal output terminal of the driving unit is electrically connected to a clock signal input terminal of a driving unit connected thereafter; For any driving unit except the last driving unit of all the driving units, the driving unit is used to perform a signal delay operation on the received current clock signal according to the delay time to obtain a delayed clock signal, and provide the delayed clock signal to the subsequent driving unit connected to the driving unit; if the driving unit is the first driving unit, the current clock signal it receives is the clock signal provided by the first driving circuit; For any of the driving units, the driving unit is used to drive the second light-emitting element correspondingly connected to the driving unit to emit light according to the received current clock signal.

3. The direct light emitting display screen according to claim 2, characterized in that: The first driving circuit is further used to control the write strobe duration of the control data received by the first driving circuit according to the delay duration; The driving unit is further configured to control a write-enabling duration of control data received by the driving unit according to the delay duration.

4. The direct light emitting display screen according to any one of claims 1 to 3, characterized in that: The direct light emitting display screen further comprises: A data control circuit, wherein the data control circuit is electrically connected to a data input terminal of the first driving circuit and a data input terminal of the second driving circuit respectively; wherein the data control circuit is used to send the determined delay duration to the data input terminal of the first driving circuit and the data input terminal of the second driving circuit.

5. The direct light emitting display screen according to claim 4, characterized in that: The direct light emitting display screen further comprises: A color difference calibration circuit, wherein the color difference calibration circuit is electrically connected to the first light-emitting element group and the second light-emitting element group, respectively; wherein the color difference calibration circuit is used to obtain the luminous chromaticity data of all first light-emitting elements and / or all second light-emitting elements, and perform a color difference adjustment operation on the first light-emitting elements and / or second light-emitting elements to be adjusted according to a preset color difference adjustment rule and all the luminous chromaticity data.

6. A light emission control method, characterized in that: The light-emitting control method is applied to a direct-light-emitting display screen, wherein the direct-light-emitting display screen includes a clock signal generating source and at least one light-emitting implementation device, each of which includes a plurality of driving units connected in sequence and a light-emitting unit electrically connected to each of the driving units; wherein the method includes: For any of the driving units, determining a target parameter corresponding to the driving unit, wherein the target parameter is used to determine a source of a clock signal based on which the driving unit drives the light-emitting unit electrically connected thereto to emit light; For any of the driving units, determining a target clock signal source according to a target parameter corresponding to the driving unit, and determining a target clock signal provided by the target clock signal source as a clock signal based on which the driving unit drives the light-emitting unit electrically connected thereto to emit light; For any of the driving units, when the target parameter corresponding to the driving unit is the first parameter, the corresponding target clock signal source is the clock signal generating source; when the target parameter corresponding to the driving unit is not the first parameter, the corresponding target clock signal source is the previous driving unit connected to the driving unit.

7. The light emission control method according to claim 6, characterized in that: After determining the target clock signal source according to the target parameter corresponding to the driving unit, and determining the target clock signal provided by the target clock signal source as the clock signal based on which the driving unit drives the light-emitting unit electrically connected thereto to emit light, the method further includes: For any driving unit except the last driving unit, a delay operation is performed on the current clock signal provided by the determined target clock signal source according to a predetermined delay time to obtain a delayed clock signal, and the delayed clock signal is provided to the subsequent driving unit connected to the driving unit.

8. The light emission control method according to claim 7, characterized in that: Before performing a delay operation on the current clock signal provided by the determined target clock signal source according to the predetermined delay time to obtain a delayed clock signal, the method further includes: Determine the delay duration; Wherein, determining the delay duration includes: Obtaining a target number of the driving units and a target screen refresh rate of the direct-light display screen; The delay duration is determined according to the target number of the driving units and the target screen refresh rate.

9. The light emission control method according to claim 8, characterized in that: After performing a delay operation on the current clock signal provided by the determined target clock signal source according to the predetermined delay time to obtain a delayed clock signal, and before providing the delayed clock signal to a subsequent driving unit connected to the driving unit, the method further includes: For any of the driving units, the write strobe duration of the control data received by the driving unit is controlled according to the delay duration.

10. An electronic device, characterized in that: The electronic device comprises: a device body and the direct-light-emitting display screen as claimed in any one of claims 1 to 5.

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