CN112863413A - Display panel, preparation method thereof and display device - Google Patents
Display panel, preparation method thereof and display device Download PDFInfo
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- CN112863413A CN112863413A CN202110223551.4A CN202110223551A CN112863413A CN 112863413 A CN112863413 A CN 112863413A CN 202110223551 A CN202110223551 A CN 202110223551A CN 112863413 A CN112863413 A CN 112863413A
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- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 154
- 238000009826 distribution Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 238000013461 design Methods 0.000 description 23
- 238000010586 diagram Methods 0.000 description 12
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- 230000009467 reduction Effects 0.000 description 3
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- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The invention provides a display panel, a preparation method thereof and a display device. The display panel includes: a data signal line; a display test circuit; the display control circuit comprises a plurality of multi-path distribution units, a plurality of display signal lines and a plurality of display control lines, wherein each multi-path distribution unit comprises a plurality of display switches, the control ends of the display switches are electrically connected with the display control lines, the first ends of the display switches are electrically connected with the display signal lines, and the second ends of the display switches are electrically connected with the data lines; the display device comprises a first control bonding pad and a one-way circuit, wherein the control ends of at least two display switches of the same multi-path distribution unit are connected with the same first control bonding pad through the one-way circuit. The display panel, the preparation method thereof and the display device provided by the invention can reduce the number of control pads for controlling the switches of the multi-way distribution unit during VT test, thereby reducing the width of the step area and further making the frame of the display panel narrower.
Description
Technical Field
The invention belongs to the technical field of display panels, and particularly relates to a display panel, a preparation method of the display panel and a display device.
Background
With the application of display technology in smart wearable and other portable electronic devices, smooth user experience is continuously pursued in the design of electronic products, and meanwhile, sensory experience of users is also increasingly pursued, for example: the wide viewing angle, high resolution, narrow frame, high screen ratio and other performances become selling points of various electronic products.
In order to manufacture a display panel with a narrow frame, the conventional method is to reduce the step area of the display panel, but the reduction of the step area brings difficulties to the circuit design, so that the change of the circuit design of the display panel becomes a requirement for manufacturing the display panel with the narrow frame.
Disclosure of Invention
Embodiments of the present invention provide a display panel, a manufacturing method thereof, and a display device, which can reduce the number of control pads for controlling switches of a multi-way distribution unit during vt (visual test) testing, so as to reduce the width of a step area, and further make a frame of the display panel narrower.
In a first aspect, an embodiment of the present invention provides a display panel, which includes:
a plurality of data signal lines arranged at intervals;
the display test circuit comprises a plurality of test switches, a plurality of test signal lines and at least one test control line, wherein the control ends of the test switches are electrically connected with the test control lines, the first ends of the test switches are electrically connected with the data signal lines, and the second ends of the test switches are electrically connected with the corresponding test signal lines;
the display control circuit comprises a plurality of multi-path distribution units, a plurality of display signal lines and a plurality of display control lines, wherein each multi-path distribution unit comprises a plurality of display switches, the control ends of the display switches are electrically connected with the display control lines, the first ends of the display switches are electrically connected with the display signal lines, and the second ends of the display switches are electrically connected with the data signal lines;
the display device comprises a first control bonding pad and a one-way circuit, wherein the control ends of at least two display switches of the same multi-path distribution unit are connected with the same first control bonding pad through the one-way circuit.
In a second aspect, an embodiment of the present invention provides a display panel, including:
a plurality of data signal lines arranged at intervals;
the display test circuit comprises a plurality of test switches, a plurality of test signal lines and at least one test control line, wherein the control ends of the test switches are electrically connected with the test control lines, the first ends of the test switches are electrically connected with the data signal lines, and the second ends of the test switches are electrically connected with the corresponding test signal lines;
the display control circuit comprises a plurality of multi-path distribution units, a plurality of display signal lines and a plurality of display control lines, wherein each multi-path distribution unit comprises a plurality of display switches, the control ends of the display switches are electrically connected with the display control lines, the first ends of the display switches are electrically connected with the display signal lines, and the second ends of the display switches are electrically connected with the data signal lines;
the second control bonding pad is used for controlling the unidirectional circuit to be cut off;
and the control ends of at least two display switches are connected with the second control bonding pad through the unidirectional circuit.
In a third aspect, an embodiment of the present invention provides a method for manufacturing a display panel, including:
providing a display panel, wherein the display panel comprises data signal lines, and a plurality of data signal lines are arranged at intervals;
the display test circuit comprises a plurality of test switches, a plurality of test signal lines and at least one test control line, wherein the control ends of the test switches are electrically connected with the test control lines, the first ends of the test switches are electrically connected with the data signal lines, and the second ends of the test switches are electrically connected with the corresponding test signal lines;
the display control circuit comprises a plurality of multi-path distribution units, a plurality of display signal lines and a plurality of display control lines, wherein each multi-path distribution unit comprises a plurality of display switches, the control ends of the display switches are electrically connected with the display control lines, the first ends of the display switches are electrically connected with the display signal lines, and the second ends of the display switches are electrically connected with the data signal lines;
a first control pad;
the control ends of at least two display switches of the same multi-path distribution unit are connected with the same first control bonding pad through the one-way circuit;
and carrying out display detection on the display panel.
In a fourth aspect, embodiments of the present invention provide a display device, which includes the display panel according to the first aspect or the second aspect of the present invention.
According to the display panel, the preparation method thereof and the display device, the one-way circuit is added to connect the multi-path distribution unit and the control bonding pads used for controlling the switches of the multi-path distribution unit during VT test, so that the switches of the multi-path distribution unit can be controlled by using a smaller number of control bonding pads during VT test, and the width of the step area can be reduced due to the reduction of the number of the control bonding pads, so that the frame of the display panel can be narrower. In other words, the embodiment of the invention can provide more circuit design space for the display panel with a narrow frame.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a circuit structure of a display panel;
fig. 2 is a schematic structural diagram of a circuit of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a circuit of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a circuit of a display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a circuit of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, display panel, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, display panel, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, display panel, article, or device that comprises the element.
For better understanding of the present invention, a circuit structure of a display panel is described with reference to fig. 1.
Fig. 1 is a schematic circuit diagram of a display panel. As shown in fig. 1, the display panel 100 includes a data signal line 101, a display test circuit 102, and a display control circuit 103.
A plurality of data signal lines 101 are arranged at intervals, and each data signal line is connected to a corresponding pixel and is used for providing a data signal to the corresponding pixel.
The display test circuit 102 includes a plurality of test switches T1, a plurality of test signal lines (e.g., the test signal lines R1, G1, B1 in fig. 1), and at least one test control line SW. The control terminal of the test switch T1 is electrically connected to the test control line SW. A first terminal of the test switch T1 is electrically connected to a corresponding test signal line, for example, a first terminal of the test switch connected to a red pixel is connected to a red test signal line R1. A second terminal of the test switch T1 is connected to the data signal line.
The display control circuit 103 includes a plurality of multiplexing units 104 (only one is illustrated in fig. 1), a plurality of display signal lines 105 (only one is illustrated in fig. 1), and a plurality of display control lines 106, a plurality of display signal pads 107, and a plurality of display control pads 108. The demultiplexing unit 104 includes a plurality of display switches T2. The control terminal of the display switch T2 is electrically connected to the display control line 106, the first terminal of the display switch T2 is electrically connected to the display signal line 105, and the second terminal of the display switch T2 is electrically connected to the data signal line 101. One end of the display signal line 105 is connected to the corresponding display switch T2, and the other end is connected to the corresponding display signal pad 107. The display control line 106 has one end connected to the corresponding display switch T2 and the other end connected to the corresponding display control pad 108.
As shown in fig. 1, the display panel 100 further includes a plurality of first control pads 109, and each first control pad 109 is connected to a control terminal of a corresponding display switch T2. When the VT test is performed, since the display signal pad 107 and the display control pad 108 are not connected to the driver chip yet and no corresponding signal can be applied, the control terminal and the one terminal of the display switch T2 are floating and at a floating potential, which may affect the test process of the display test circuit 102, and therefore a control signal is applied to the display switch T2 through the first control pad 109 to turn off the demultiplexing unit 104. However, in the current wiring design, the number of the first control pads 109 is related to the design of the demultiplexing unit 104. If the demultiplexing unit 104 is of a 1:6 design (i.e. comprises 6 display switches T2), the number of first control pads 109 also needs to be at least 6. Whereas if the demultiplexing unit 104 is of a 1:12 design (i.e. comprises 12 display switches T2), the number of first control pads 109 also needs to be at least 12. This circuit design occupies more area of the display panel 100, which increases the difficulty of the narrow bezel design.
In order to solve the technical problems, embodiments of the present invention provide a display panel, a manufacturing method thereof, and a display device, which provide a new line design, are more favorable for implementing a narrow-bezel design, and reduce the line arrangement difficulty of the narrow-bezel display panel. The following first describes a display panel provided in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a circuit of a display panel according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a circuit of a display panel according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of a circuit of a display panel according to an embodiment of the present invention.
As shown in fig. 2 to 4, the display panel 200 includes a data signal line 201, a display test circuit 202, a display control circuit 203, a first control pad 209, and a unidirectional circuit 211.
A plurality of data signal lines 201 are arranged at intervals, and each data signal line 201 is connected to a corresponding pixel and is used for providing a data signal for the corresponding pixel. Illustratively, in some embodiments of the present invention, the pixels are arranged in an RGB manner, and each pixel is provided with a data signal from a corresponding data signal line 201 for display. In some embodiments of the present invention, other designs for the pixels may be used, such as an RGBW arrangement, or an R/B, G, R/B arrangement. It should be understood that the arrangement of the pixels does not affect the use of the circuit provided by the present invention, as long as the corresponding adjusting part circuit, for example, adjusts the structures of the display test circuit 202 and the display control circuit 203.
The display test circuit 202 includes a plurality of test switches T1, a plurality of test signal lines (e.g., the test signal lines R1, G1, B1 in fig. 2), and at least one test control line SW. The control terminal of the test switch T1 is electrically connected to the test control line SW. A first terminal of the test switch T1 is electrically connected to a corresponding test signal line, for example, a first terminal of the test switch connected to a red pixel is connected to a red test signal line R1. A second terminal of the test switch T1 is connected to the data signal line. In performing the VT test, the VT test is performed by opening the test switch T1 by applying a corresponding signal to the test control line SW and then supplying the test signal to the corresponding data signal line through the corresponding test signal line.
The display control circuit 203 includes a plurality of multiplexing units 204 (only one is illustrated in fig. 2), a plurality of display signal lines 205, and a plurality of display control lines 206. The demultiplexing unit 204 includes a plurality of display switches T2. The control terminal of the display switch T2 is electrically connected to the display control line 206, the first terminal of the display switch T2 is electrically connected to the display signal line 205, and the second terminal of the display switch T2 is electrically connected to the data signal line 201. Illustratively, in the embodiment of the present invention, the demultiplexing unit 204 adopts a 1:6 design, each display signal line 205 is connected to 6 data signal lines 201 through the demultiplexing unit 204, and a data signal is distributed to each data signal line 201 through the demultiplexing unit 204, so that the number of the display signal lines 205 can be reduced, a narrow frame can be realized, and the pin requirement of the display driving chip can be reduced. It should be understood that the circuit structure of the display panel provided by the present invention, the demultiplexing unit 204 is not limited to 1:6 design, and other designs, such as 1:3 or 1:12, may be adopted according to the requirement. The display control line 206 provides display control signals CKH 1-CKH 6, and turns on or off the display switch T2 through the display control signals CKH 1-CKH 6, so as to provide the data signals on the display signal line 205 to the corresponding data signal line 201 and further to the corresponding pixel unit.
The first control pad 209 and the unidirectional circuit 211 are used to turn off the multiplexing unit 204 at the VT test. Specifically, in some embodiments of the present invention, the control terminals of at least two display switches T2 of the same demultiplexing unit 204 are connected to the same first control pad 209 through a unidirectional circuit 211. As shown in fig. 2 and 3, in some embodiments of the present invention, the control terminals of all the display switches T2 of the same demultiplexing unit 204 are connected to the same first control pad 209 through a unidirectional circuit 211. Of course, in some embodiments of the present invention, the control terminals of the display switches T2 of the same multiplexing unit 204 may not all be connected to the same first control pad 209 through the unidirectional circuit 211, for example, the control terminals of 2-3 display switches T2 may be connected to the same first control pad 209 through the unidirectional circuit 211, and the number of the first control pads 209 also increases accordingly.
In some embodiments of the present invention, the control terminals of at least two display switches T2 of different multiplexing units 204 are connected to the same first control pad 209 through a unidirectional circuit 211. As shown in fig. 4, the control terminals of all the display switches T2 of the two demultiplexing units 204 are connected to the same first control pad 209 through the unidirectional circuit 211. It should be understood that in other embodiments, the control terminals of all the display switches T2 of 2 or more demultiplexing units 204 may also be connected to the same first control pad 209 through the unidirectional circuit 211. Alternatively, the control terminals of the partial display switches T2 (e.g., one or two display switches T2) of two or more of the demultiplexing units 204 are connected to the same first control pad 209 through the unidirectional circuit 211.
By adopting the display panel 200 provided by the embodiment of the invention, when the VT test is performed, the first control pad 209 applies a corresponding control signal to turn off the multi-path distribution unit 204, thereby avoiding the influence of the multi-path distribution unit 204 on the VT test. As an example, the switch T2 is shown as a P-type transistor, and the demultiplexing unit 204 is turned off by applying a high level signal to the first control pad 209 during the VT test.
In the embodiment of the invention, since the control end of the display switch of the multiplexing unit is connected with the first control pad through the unidirectional circuit, all the display switches of the multiplexing unit can be turned off through a small number of the first control pads. Compared with the circuit structure shown in fig. 1, the number of the first control pads is greatly reduced, so that the area required by the frame of the display panel can be reduced, and the width of the step of the display panel can be reduced. In other words, the circuit structure of the display panel provided by the embodiment of the invention is more favorable for realizing narrow frame design, namely reducing the difficulty of narrow frame design.
In the embodiment of the present invention, the unidirectional circuit 211 functions to allow only a signal to be transmitted from the first control pad 209 to the control terminal of the corresponding display switch T2, and not to allow a signal to be transmitted from the control terminal of the display switch T2 to the first control pad 209. Illustratively, as shown in fig. 2 to 4, the unidirectional circuit 211 includes a diode device, the control terminal of the display switch T2 corresponding to the negative electrode of the diode device is electrically connected, and the positive electrodes of the diode devices electrically connected to the same first control pad 209 are electrically connected to each other. Illustratively, the diode device includes a thin film transistor having a gate shorted to the first or second pole.
Referring to fig. 3 to 4, in some embodiments of the invention, the display panel 200 further includes a second control pad 210. The second control pad 210 is used to control the turning off of the unidirectional circuit 211. The second control pad 210 is connected to the demultiplexing unit in a manner described with reference to the first control pad 209. That is, the control terminals of the at least two display switches T2 are connected to the second control pad 210 through the unidirectional circuit 211. When the display panel is tested for display, the display driving chip supplies data signals to the data signal lines 201 through the demultiplexing unit 204, the display signal lines 205, and the display control lines 206. At this time, it is necessary to turn off the unit circuit 211 to avoid the display control line 206 from being short-circuited, thereby causing signal confusion. Illustratively, in the embodiment of the present invention, the display switch T2 is a P-type transistor, and when displaying, the unidirectional circuit 211 may be turned off by applying a low-level signal to the second control pad 210, thereby preventing the display control line 206 from being short-circuited.
Referring to fig. 2 to 4, in some embodiments of the invention, the display panel 200 further includes a plurality of display signal pads 207 and a plurality of display control pads 208. The display signal lines 205 corresponding to the display signal pads 207 are connected, and the display control pads 208 are connected to the corresponding display control lines 206. That is, one end of the display signal line 105 is connected to the corresponding display switch T2, and the other end is connected to the corresponding display signal pad 107. The display control line 106 has one end connected to the corresponding display switch T2 and the other end connected to the corresponding display control pad 108. The display signal pad 207 and the display control pad 208 are used for connection with the display driving chip. The display driving chip applies corresponding signals to the corresponding display signal lines 205 and display control lines 206 through the display signal pads 207 and display control pads 208.
In some embodiments of the present invention, the display panel 200 further includes a plurality of test signal pads and at least one test control pad. The test signal pads are connected to corresponding test signal lines (e.g., R1, G1, B1), and the test control pads are connected to corresponding test control signal lines SW.
Fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
As shown in fig. 5, the display panel 200 according to the embodiment of the present invention includes a display area 10 and a non-display area 20 surrounding the display area 10. The data signal line 201 is disposed in the display area 10. A display test circuit (e.g., the display test circuit 202), a display control circuit (e.g., the display control circuit 203), a unidirectional circuit (e.g., the unidirectional circuit 211), a first control pad (e.g., the first control pad 209), a second control pad (e.g., the second control pad 210) are provided in the non-display area 20.
As shown in fig. 5, the non-display area 20 includes a test pad area 30 and a display pad area 40. The first control pad (e.g., the first control pad 209), the test signal pad, and the test control pad are disposed in the test pad region 30. Display signal pads (e.g., display signal pad 207), display control pads (e.g., display control pad 208) are provided in the display pad region 40.
Further, in some embodiments of the present invention, a display test circuit (e.g., display test circuit 202) is located between the display area 10 and a display control circuit (e.g., display control circuit 203), or the display control circuit (e.g., display control circuit 203) is located between the display area 10 and a display test circuit (e.g., display test circuit 202).
Fig. 6 is a schematic structural diagram of a circuit of a display panel according to an embodiment of the present invention.
As shown in fig. 6, the display panel 300 according to the embodiment of the present invention includes a data signal line 301, a display test circuit 302, a display control circuit 303, a second control pad 310, and a unidirectional circuit 311. The display control circuit 303 includes a multiplexing unit 304, a display signal line 305, a display control line 306, a display signal pad 307, and a display control pad 308. The arrangement of the data signal line 301, the display test circuit 302, the display control circuit 303, the second control pad 310 and the unidirectional circuit 311 is similar to that described in the previous embodiment, and will not be described again here. The display panel 300 provided by the embodiment of the invention is the display panel provided by the previous embodiment, after the VT test and other tests are completed, the structures such as the first control pad 209 and the like which are not used any more are cut off.
The display panel provided by the embodiment of the invention is provided with the second control pad, and the unidirectional circuit is cut off by applying corresponding signals to the second control pad during display (such as MOD dot screen), so that the display control line is prevented from being short-circuited.
According to the display panel provided by the embodiment of the invention, the number of the first control bonding pads is reduced in the manufacturing process, so that the step width of the display panel can be reduced, more space is provided for the circuit design of the display panel, and the difficulty of narrow frame design is reduced. The display panel adopting the circuit design can have smaller step width of the display panel and is beneficial to realizing narrow frame design.
The embodiment of the invention also provides a display device which comprises the display panel provided by the embodiment of the invention. With similar beneficial effects.
Fig. 7 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present invention.
As shown in fig. 7, a method 400 for manufacturing a display panel according to an embodiment of the present invention includes:
Specifically, in step 401, the display panel includes data signal lines, a plurality of which are arranged at intervals;
the display test circuit comprises a plurality of test switches, a plurality of test signal lines and at least one test control line, wherein the control ends of the test switches are electrically connected with the test control lines, the first ends of the test switches are electrically connected with the data signal lines, and the second ends of the test switches are electrically connected with the corresponding test signal lines;
the display control circuit comprises a plurality of multi-path distribution units, a plurality of display signal lines and a plurality of display control lines, wherein each multi-path distribution unit comprises a plurality of display switches, the control ends of the display switches are electrically connected with the display control lines, the first ends of the display switches are electrically connected with the display signal lines, and the second ends of the display switches are electrically connected with the data signal lines;
a first control pad;
and the control ends of at least two display switches of the same multi-path distribution unit are connected with the same first control bonding pad through the one-way circuit.
The structure of the display panel can refer to the description in conjunction with fig. 2 to fig. 4, and is not described herein again.
In step 402, the method for detecting the display of the display panel includes:
providing a signal to the test control line to turn on the test switch;
at the same time, a signal for turning on the unidirectional circuit is supplied to the first control pad, and the signal turns off the display switch.
Illustratively, the test switch T1 is a P-type transistor, for example, and a low level signal may be provided to the test control line SW in step 402 to turn on the test switch T1.
Illustratively, the display switch T2 is a P-type transistor, for example, and a high signal may be provided to the first control pad to turn on the unidirectional circuit and turn off the display switch T2 in step 402.
In some embodiments of the invention, method 400 further comprises: and after the display detection is finished, providing a signal for cutting off the test switch to the test control line. Illustratively, the test switch T1 is a P-type transistor, for example, and after the display detection is finished, a high-level signal may be provided to the test control line SW, so that the test switch T1 is turned off.
In some embodiments of the present invention, the display panel provided in step 401 further comprises a second control pad, and the control terminals of at least two of the display switches are connected to the second control pad through the unidirectional circuit;
as shown in fig. 7, the method 400 further includes:
and 403, separating the first control pad from the unidirectional circuit after the display test is finished. For example, the first control pad is cut out from the display panel.
And 404, connecting the second control pad with the unidirectional circuit, and controlling the unidirectional circuit to be cut off. Illustratively, switch T2 is shown as a P-type transistor, for example, and a low signal may be provided to the second control pad to turn off the unidirectional circuit in step 404.
According to the display panel, the preparation method thereof and the display device, the one-way circuit is added to connect the multi-path distribution unit and the control bonding pads used for controlling the switches of the multi-path distribution unit during VT test, so that the switches of the multi-path distribution unit can be controlled by using a smaller number of control bonding pads during VT test, and the width of the step area can be reduced due to the reduction of the number of the control bonding pads, so that the frame of the display panel can be narrower. In other words, the embodiment of the invention can provide more circuit design space for the display panel with a narrow frame.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing display panel embodiment, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (14)
1. A display panel, comprising:
a plurality of data signal lines arranged at intervals;
the display test circuit comprises a plurality of test switches, a plurality of test signal lines and at least one test control line, wherein the control ends of the test switches are electrically connected with the test control lines, the first ends of the test switches are electrically connected with the data signal lines, and the second ends of the test switches are electrically connected with the corresponding test signal lines;
the display control circuit comprises a plurality of multi-path distribution units, a plurality of display signal lines and a plurality of display control lines, wherein each multi-path distribution unit comprises a plurality of display switches, the control ends of the display switches are electrically connected with the display control lines, the first ends of the display switches are electrically connected with the display signal lines, and the second ends of the display switches are electrically connected with the data signal lines;
the display device comprises a first control bonding pad and a one-way circuit, wherein the control ends of at least two display switches of the same multi-path distribution unit are connected with the same first control bonding pad through the one-way circuit.
2. The display panel according to claim 1, wherein control terminals of at least two of the display switches of different ones of the multiplexing units are connected to the same first control pad through the unidirectional circuit.
3. The display panel according to claim 1, further comprising:
the second control pad is used for controlling the cut-off of the unidirectional circuit;
and the control ends of at least two display switches are connected with the second control bonding pad through the unidirectional circuit.
4. The display panel according to claim 1, wherein the unidirectional circuit includes diode devices, negative electrodes of the diode devices are electrically connected to control terminals of the corresponding display switches, and positive electrodes of the diode devices electrically connected to the same first control pad are electrically connected to each other.
5. The display panel according to claim 4, wherein the diode device comprises a thin film transistor having a gate shorted to the first pole or the second pole.
6. The display panel according to claim 1, further comprising:
the display control circuit comprises a plurality of display signal bonding pads and a plurality of display control bonding pads, wherein the display signal bonding pads are connected with corresponding display signal lines, and the display control bonding pads are connected with corresponding display control lines;
the test signal pads are connected with corresponding test signal lines, and the test control pads are connected with corresponding test control signal lines.
7. The display panel according to claim 1, wherein the display panel includes a display area and a non-display area surrounding the display area, the data signal line is provided in the display area, and the display test circuit, the display control circuit, the unidirectional circuit, and the first control pad are provided in the non-display area.
8. The display panel of claim 7, wherein the display test circuit is located between the display area and the display control circuit, or,
the display control circuit is located between the display area and the display test circuit.
9. A display panel, comprising:
a plurality of data signal lines arranged at intervals;
the display test circuit comprises a plurality of test switches, a plurality of test signal lines and at least one test control line, wherein the control ends of the test switches are electrically connected with the test control lines, the first ends of the test switches are electrically connected with the data signal lines, and the second ends of the test switches are correspondingly electrically connected with the test signal lines;
the display control circuit comprises a plurality of multi-path distribution units, a plurality of display signal lines and a plurality of display control lines, wherein each multi-path distribution unit comprises a plurality of display switches, the control ends of the display switches are electrically connected with the display control lines, the first ends of the display switches are electrically connected with the display signal lines, and the second ends of the display switches are electrically connected with the data signal lines;
the second control bonding pad is used for controlling the unidirectional circuit to be cut off;
and the control ends of at least two display switches are connected with the second control bonding pad through the unidirectional circuit.
10. A method for manufacturing a display panel, comprising:
providing a display panel, wherein the display panel comprises data signal lines, and a plurality of data signal lines are arranged at intervals;
the display test circuit comprises a plurality of test switches, a plurality of test signal lines and at least one test control line, wherein the control ends of the test switches are electrically connected with the test control lines, the first ends of the test switches are electrically connected with the data signal lines, and the second ends of the test switches are electrically connected with the corresponding test signal lines;
the display control circuit comprises a plurality of multi-path distribution units, a plurality of display signal lines and a plurality of display control lines, wherein each multi-path distribution unit comprises a plurality of display switches, the control ends of the display switches are electrically connected with the display control lines, the first ends of the display switches are electrically connected with the display signal lines, and the second ends of the display switches are electrically connected with the data signal lines;
a first control pad;
the control ends of at least two display switches of the same multi-path distribution unit are connected with the same first control bonding pad through the one-way circuit;
and carrying out display detection on the display panel.
11. The method for manufacturing a display panel according to claim 10, wherein the method for performing display inspection on the display panel includes:
providing a signal to the test control line to turn on the test switch;
at the same time, a signal for turning on the unidirectional circuit is supplied to the first control pad, and the signal turns off the display switch.
12. The manufacturing method according to claim 11, wherein a signal for turning off the test switch is supplied to the test control line after the display detection is completed.
13. The method according to claim 10, wherein the display panel further comprises a second control pad, and control terminals of at least two of the display switches are connected to the second control pad through the unidirectional circuit;
after the display test is finished, separating the first control bonding pad from the unidirectional circuit;
and connecting the second control pad with the unidirectional circuit to control the unidirectional circuit to be cut off.
14. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110223551.4A CN112863413A (en) | 2021-03-01 | 2021-03-01 | Display panel, preparation method thereof and display device |
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| CN202110223551.4A CN112863413A (en) | 2021-03-01 | 2021-03-01 | Display panel, preparation method thereof and display device |
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|---|---|---|---|---|
| CN107039015A (en) * | 2017-06-05 | 2017-08-11 | 京东方科技集团股份有限公司 | A kind of display driver circuit and its control method, display device |
| CN112289243A (en) * | 2020-11-30 | 2021-01-29 | 上海天马有机发光显示技术有限公司 | Display panel, preparation method thereof and display device |
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| CN107039015A (en) * | 2017-06-05 | 2017-08-11 | 京东方科技集团股份有限公司 | A kind of display driver circuit and its control method, display device |
| CN112289243A (en) * | 2020-11-30 | 2021-01-29 | 上海天马有机发光显示技术有限公司 | Display panel, preparation method thereof and display device |
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