Display panel, display module and display device

Abstract

The invention provides a display panel, a display module and a display device.According to the display panel, a first gate circuit and a second gate circuit are arranged in an island region in a second display region, and a first gate driving circuit and a second gate driving circuit are used for driving a first pixel circuit in a first display region; according to the display panel, the first gate driving circuit is used for driving the second pixel circuit in the second display area, the non-display area where the gate driving circuit is located originally is changed into the display area, frameless full-screen display can be achieved while the stretching function is achieved, and the performance of the display panel is improved. Meanwhile, the island area and the stretching area in the first display area are consistent with the island area and the stretching area in the second display area in shape, and the display consistency of all the areas on the display panel is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel, a display module and a display device. Background Art

[0002] With the development of flexible technology, OLED (Organic Light-Emitting Diode) display products have gradually transitioned from bending and folding to elasticity and flexibility. Flexible and stretchable display has received widespread attention in the market due to its broad application space. The most prominent advantage of flexible OLED display products over traditional flat panel display products is that it breaks through the inherent concept of the original two-dimensional display and expands the application field of display products to more life and portable devices.

[0003] At the same time, the development of flexible and stretchable displays also faces many technical challenges. Existing stretchable display products are difficult to achieve borderless full-screen display. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display panel that can achieve a borderless full-screen display while realizing a stretching function.

[0005] Based on the above purpose, the present application provides a display panel, the display panel having a first display area and a second display area, the second display area is at least located on one side of the first display area, the first display area and the second display area both include an island area and a stretching area, a plurality of the island areas are distributed in an array in the first display area and the second display area, the stretching area is located between two adjacent rows and / or two adjacent columns of the island areas, and the display panel includes:

[0006] A first pixel circuit, located in the island area and in the first display area;

[0007] A second pixel circuit is located in the island area and in the second display area;

[0008] A first gate driving circuit and a second gate driving circuit are located in the island area and in the second display area;

[0009] a first output signal line connected to an output end of the first gate driving circuit and driving the first pixel circuit and the second pixel circuit using an output signal of the first gate driving circuit, wherein the first output signal line is located in the stretching area and in the first display area and the second display area;

[0010] The second output signal line is connected to the output end of the second gate driving circuit and drives the first pixel circuit using the output signal of the second gate driving circuit. The second output signal line is located in the stretching area and in the first display area.

[0011] In one embodiment, the second display area includes a first sub-display area and a second sub-display area, the second sub-display area is located between the first sub-display area and the first display area, the first gate driving circuit is located in the first sub-display area, and the second gate driving circuit is located in the second sub-display area;

[0012] Preferably, the number of signals of the first pixel circuit is greater than the number of signals of the second pixel circuit;

[0013] Preferably, the first pixel circuit includes a 7T1C circuit, and the second pixel circuit includes a 2T1C circuit.

[0014] In one embodiment, the display panel further includes:

[0015] A first data line, located in the stretching area and in the first display area, the first data line connecting adjacent first pixel circuits;

[0016] a first positive power line, located in the stretching area and in the first display area, the first positive power line connecting the adjacent first pixel circuit;

[0017] a first negative power line, located in the stretching area and in the first display area, the first negative power line being connected to the adjacent first pixel circuit;

[0018] Preferably, the first negative power line extends along a row direction, and the first data line and the first positive power line extend along a column direction.

[0019] In one embodiment, the display panel further includes:

[0020] A second data line, located in the stretching area and in the second display area, the second data line connecting the adjacent second pixel circuits;

[0021] a second positive power line, located in the stretching area and in the second display area, the second positive power line being connected to the adjacent second pixel circuit;

[0022] a second negative power line, located in the stretching area and in the second display area, the second negative power line being connected to the adjacent second pixel circuit;

[0023] Preferably, the second negative power line extends along a row direction, and the second data line and the second positive power line extend along a column direction.

[0024] In one embodiment, the first gate driving circuit includes a light emitting control circuit, and the first output signal line includes a light emitting control output signal line.

[0025] In one embodiment, the display panel further includes a plurality of first signal lines connected to the light emitting control circuit, and the plurality of first signal lines are distributed in a plurality of the stretching areas;

[0026] Preferably, the plurality of first signal lines include a first high-level signal line, a first low-level signal line, a first clock signal line, a second clock signal line, and a light-emitting control input signal line.

[0027] In one embodiment, the second gate driving circuit includes a scanning circuit, and the second output signal line includes a scanning output signal line.

[0028] In one embodiment, the display panel further includes a plurality of second signal lines connected to the scanning circuit, and the plurality of second signal lines are distributed in a plurality of the stretching areas;

[0029] Preferably, the plurality of second signal lines include a second high level signal line, a second low level signal line, a third clock signal line, a fourth clock signal line, and a scan input signal line.

[0030] In one embodiment, the display panel further includes:

[0031] A pixel definition layer, wherein the pixel definition layer and the display layer are located on the same side of the substrate, and the pixel definition layer is used to isolate each of the light-emitting layers.

[0032] Based on the same inventive concept, the present application also discloses a display module, which includes any one of the display panels described above.

[0033] Based on the same inventive concept, the present application also discloses a display device, which includes the display module described above.

[0034] Compared with the prior art, the display panel provided by the present application realizes that the non-display area where the gate driving circuit is originally located is converted into a display area by setting the first gate circuit and the second gate circuit in the island area in the second display area, using the first gate driving circuit and the second gate driving circuit to drive the first pixel circuit in the first display area, and using the first gate driving circuit to drive the second pixel circuit in the second display area. This can realize a stretching function while achieving a borderless full-screen display, thereby improving the performance of the display panel.

[0035] At the same time, the shapes of the island area and the stretching area in the first display area are consistent with those of the island area and the stretching area in the second display area, thereby ensuring the consistency of display in each area on the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 is a structural schematic diagram of a related display panel;

[0038] Figure 2 is a schematic diagram of a layer structure of a related display panel;

[0039] Figure 3 This is a schematic diagram of the structure of a display panel in one embodiment of the present application;

[0040] Figure 4 This is a schematic diagram of the structure of a display panel in another embodiment of the present application;

[0041] Figure 5 This is a schematic diagram of the structure of a display panel in another embodiment of the present application;

[0042] Figure 6 This is a schematic structural diagram of a first display area of ​​a display panel in another embodiment of the present application;

[0043] Figure 7 This is a schematic structural diagram of a first sub-display area of ​​a display panel in another embodiment of the present application;

[0044] Figure 8 Schematic diagram of the structure of the second sub-display area of ​​the display panel in another embodiment of the present application.

[0045] Marking Description:

[0046] 100, display panel; 101, display area; 102, non-display area; 103, first display area; 104, second display area; 105, first sub-display area; 106, second sub-display area; 11, display substrate; 12, encapsulation layer;

[0047] 1. Island area; 2. Stretching area; 3. First pixel circuit; 4. Second pixel circuit;

[0048] 51. A first output signal line; 52. A second output signal line;

[0049] 61. a first data line; 62. a first positive power line; 63. a first negative power line;

[0050] 71. a second data line; 72. a second positive power line; 73. a second negative power line;

[0051] 81. First high level signal line; 82. First low level signal line; 83. First clock signal line; 84. Second clock signal line; 85. Light emitting control input signal line;

[0052] 91. A second high level signal line; 92. A second low level signal line; 93. A third clock signal line; 94. A fourth clock signal line; 95. A scan input signal line. DETAILED DESCRIPTION

[0053] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0054] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0055] Please refer to Figure 1 and 2 As shown, a related stretchable display panel 100 includes a display area 101 and a non-display area 102. The display area 101 includes an island area 1 and a stretching area 2 connecting adjacent island areas 1. The stretching area 2 is stretchable so that the display panel 100 has a stretchable and deformable performance. A display substrate 11 is disposed on the island area 1. The display substrate 11 generally includes a flexible substrate, a pixel circuit and other structures, and an encapsulation layer 12 is formed on the display substrate 11 and the stretching area 2.

[0056] After long-term research, the inventors found that since the non-display area 102 needs to be equipped with a gate driving circuit, the non-display area 102 cannot display the picture. Due to the existence of the non-display area 102, the display panel 100 cannot achieve a borderless full-screen display, which makes it difficult to meet consumers' growing demand for full-screen display of products.

[0057] Based on this, the present application provides a display panel solution to solve the above problems.

[0058] Please refer to Figure 3 and 4 As shown, a display panel 100 provided in an embodiment of the present application is provided. The display panel 100 has a first display area 103 and a second display area 104. The second display area 104 is at least located on one side of the first display area 103. The first display area 103 and the second display area 104 both include an island area 1 and a stretching area 2. A plurality of island areas 1 are distributed in an array in the first display area 103 and the second display area 104. The stretching area 2 is located between two adjacent rows and / or two adjacent columns of island areas 1. The row direction is the X direction, and the column direction is the Y direction.

[0059] The display panel 100 includes a first pixel circuit 3, a second pixel circuit 4, a first gate driving circuit and a second gate driving circuit. The first pixel circuit 3 is located in the island area 1 and in the first display area 103, the second pixel circuit 4 is located in the island area 1 and in the second display area 104, and the first gate driving circuit and the second gate driving circuit are located in the island area 1 and in the second display area 104.

[0060] The display panel 100 further includes a first output signal line 51 and a second output signal line 52. The first output signal line 51 is connected to the output end of the first gate driving circuit, and uses the output signal of the first gate driving circuit to drive the first pixel circuit 3 and the second pixel circuit 4. The first output signal line 51 is located in the stretching area 2 and in the first display area 103 and the second display area 104. The second output signal line 52 is connected to the output end of the second gate driving circuit, and uses the output signal of the second gate driving circuit to drive the first pixel circuit 3. The second output signal line 52 is located in the stretching area 2 and in the first display area 103.

[0061] The display panel 100 provided in this embodiment realizes that the non-display area where the gate drive circuit is originally located is converted into a display area by setting the first gate circuit and the second gate circuit in the island area 1 in the second display area 104, using the first gate drive circuit and the second gate drive circuit to drive the first pixel circuit 3 in the first display area 103, and using the first gate drive circuit to drive the second pixel circuit 4 in the second display area 104, so that the non-display area where the gate drive circuit is originally located is converted into a display area, and a stretching function can be realized while realizing a borderless full-screen display, thereby improving the performance of the display panel 100.

[0062] At the same time, the island area 1 and the stretching area 2 in the first display area 103 are consistent in shape with the island area 1 and the stretching area 2 in the second display area 104 , thereby ensuring the consistency of display in each area on the display panel 100 .

[0063] Please refer to Figure 5 As shown, in one embodiment, the second display area 104 includes a first sub-display area 105 and a second sub-display area 106, the second sub-display area 106 is located between the first sub-display area 105 and the first display area 103, the first gate drive circuit is located in the first sub-display area 105, and the second gate drive circuit is located in the second sub-display area 106.

[0064] The output signal of the second gate driving circuit is only used to drive the first pixel circuit 3 in the first display area 103. Therefore, arranging the second gate driving circuit closer to the first display area 103 relative to the first gate driving circuit is beneficial to shorten the signal transmission distance and reduce wiring.

[0065] Preferably, the number of signals of the first pixel circuit 3 is greater than the number of signals of the second pixel circuit 4. Normally, the more signals there are, the more complex the corresponding pixel circuit structure is, and the better the display effect is. Specifically, the first pixel circuit 3 includes a 7T1C circuit, and the second pixel circuit 4 includes a 2T1C circuit. Among them, the driving of the 7T1C circuit requires a light-emitting control circuit (EM circuit) and a scanning circuit (SCAN circuit), and the driving of the 2T1C circuit only requires a light-emitting control circuit.

[0066] Please refer to Figure 6 As shown, in one embodiment, the display panel 100 also includes a first data line 61, a first positive power line 62 and a first negative power line 63, the first data line 61 is located in the stretching area 2 and in the first display area 103, and the first data line 61 is connected to the adjacent first pixel circuit 3; the first positive power line 62 is located in the stretching area 2 and in the first display area 103, and the first positive power line 62 is connected to the adjacent first pixel circuit 3; the first negative power line 63 is located in the stretching area 2 and in the first display area 103, and the first negative power line 63 is connected to the adjacent first pixel circuit 3.

[0067] Specifically, the first data line 61 is used to provide a data signal for the first pixel circuit 3, the first positive power line 62 is used to provide a positive power supply voltage signal for the first pixel circuit 3, and the first negative power line 63 is used to provide a negative power supply voltage signal for the first pixel circuit 3. Preferably, the first negative power line 63 extends in the row direction, and the first data line 61 and the first positive power line 62 extend in the column direction. Among them, extending different lines in different directions in the first display area 103 can ensure the stretchability of the stretching area 2 of the first display area 103 and the uniformity of the stretching area 2 in different directions.

[0068] Reference Figure 7 and 8 As shown, in one embodiment, the display panel 100 also includes a second data line 71, a second positive power line 72 and a second negative power line 73, the second data line 71 is located in the stretching area 2 and in the second display area 104, and the second data line 71 is connected to the adjacent second pixel circuit 4; the second positive power line 72 is located in the stretching area 2 and in the second display area 104, and the second positive power line 72 is connected to the adjacent second pixel circuit 4; the second negative power line 73 is located in the stretching area 2 and in the second display area 104, and the second negative power line 73 is connected to the adjacent second pixel circuit 4.

[0069] Specifically, the second data line 71 is used to provide a data signal for the second pixel circuit 4, the second positive power line 72 is used to provide a positive power supply voltage signal for the second pixel circuit 4, and the second negative power line 73 is used to provide a negative power supply voltage signal for the second pixel circuit 4. Preferably, the second negative power line 73 extends in the row direction, and the second data line 71 and the second positive power line 72 extend in the column direction. By extending different lines in different directions in the second display area 104, the stretchability of the stretching area 2 in the second display area 104 and the uniformity of the stretching area 2 in different directions can be ensured.

[0070] Please continue to refer to Figure 7 As shown, in one embodiment, the first gate drive circuit includes a light emitting control circuit, and the first output signal line 51 includes a light emitting control output signal line. The light emitting control circuit is generally used to control the light emitting time of a pixel to implement a PWM (pulse width modulation) dimming function. In the display panel, the light emitting control circuit operates under the control of an external driver IC (driver chip). Its main function is to accurately control the light emitting period of each pixel, thereby adjusting the brightness of the pixel.

[0071] In one embodiment, the display panel 100 further includes a plurality of first signal lines connected to the light emitting control circuit, and the plurality of first signal lines are distributed in a plurality of stretching areas 2. The stretchability of the stretching area 2 in the second display area 104 and the uniformity of the stretching area 2 along different directions can be ensured. Furthermore, the plurality of first signal lines are distributed in a plurality of stretching areas 2 in the first sub-display area 105.

[0072] Preferably, the plurality of first signal lines include a first high-level signal line 81, a first low-level signal line 82, a first clock signal line 83, a second clock signal line 84, and a light-emitting control input signal line 85. The first high-level signal line 81 is used to provide a first high-level signal, the first low-level signal line 82 is used to provide a first low-level signal, the first clock signal line 83 is used to provide a first clock signal, the second clock signal line 84 is used to provide a second clock signal, and the light-emitting control input signal line 85 is used to provide a light-emitting control signal.

[0073] Please continue to refer to Figure 8 As shown, in one embodiment, the second gate driving circuit includes a scanning circuit, and the second output signal line 52 includes a scanning output signal line. The scanning circuit is mainly used to select pixels row by row to determine which pixels will receive data and operate at a specific moment. The working principle of the scanning circuit is to output scanning signals in sequence according to a certain timing and order. The driving of the 2T1C pixel circuit only requires a light emitting control circuit, and does not require a scanning circuit.

[0074] In one embodiment, the display panel 100 further includes a plurality of second signal lines connected to the scanning circuit, and the plurality of second signal lines are distributed in a plurality of stretching areas 2. The stretchability of the stretching area 2 in the second display area 104 and the uniformity of the stretching area 2 along different directions can be ensured. Furthermore, the plurality of second signal lines are distributed in a plurality of stretching areas 2 in the second sub-display area 106.

[0075] Preferably, the plurality of second signal lines include a second high level signal line 91, a second low level signal line 92, a third clock signal line 93, a fourth clock signal line 94, and a scan input signal line 95. The second high level signal line 91 is used to provide a second high level signal, the second low level signal line 92 is used to provide a second low level signal, the third clock signal line 93 is used to provide a third clock signal, the fourth clock signal line 94 is used to provide a fourth clock signal, and the scan input signal line 95 is used to provide a scan signal.

[0076] Based on the same inventive concept, another embodiment of the present application further discloses a display module, which includes the display panel 100 in the above embodiment.

[0077] A display module provided in this embodiment has a display panel 100, which realizes converting a non-display area where the gate drive circuit is originally located into a display area by setting a first gate circuit and a second gate circuit in an island area 1 in a second display area 104, using a first gate drive circuit and a second gate drive circuit to drive a first pixel circuit 3 in a first display area 103, and using a first gate drive circuit to drive a second pixel circuit 4 in a second display area 104, thereby realizing a stretching function while achieving a borderless full-screen display, thereby improving the performance of the display module.

[0078] Based on the same inventive concept, another embodiment of the present application further discloses a display device, which includes the display module in the above embodiment. Further, the display device includes a mobile phone, VR equipment, computer, television, car display equipment, etc.

[0079] A display device provided in this embodiment has a display panel 100, which realizes converting a non-display area where the gate drive circuit is originally located into a display area by setting a first gate circuit and a second gate circuit in an island area 1 in a second display area 104, using a first gate drive circuit and a second gate drive circuit to drive a first pixel circuit 3 in a first display area 103, and using a first gate drive circuit to drive a second pixel circuit 4 in a second display area 104, thereby realizing a stretching function while achieving a borderless full-screen display, thereby improving the performance of the display device.

[0080] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0081] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0082] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display panel has a first display area and a second display area, the second display area is at least located on one side of the first display area, the first display area and the second display area both include an island area and a stretching area, a plurality of the island areas are distributed in an array in the first display area and the second display area, the stretching area is located between two adjacent rows and / or two adjacent columns of the island areas, and the display panel includes: A first pixel circuit, located in the island area and in the first display area; A second pixel circuit is located in the island area and in the second display area; A first gate driving circuit and a second gate driving circuit are located in the island area and in the second display area; a first output signal line connected to an output end of the first gate driving circuit and driving the first pixel circuit and the second pixel circuit using an output signal of the first gate driving circuit, wherein the first output signal line is located in the stretching area and in the first display area and the second display area; The second output signal line is connected to the output end of the second gate driving circuit and drives the first pixel circuit using the output signal of the second gate driving circuit. The second output signal line is located in the stretching area and in the first display area.

2. The display panel according to claim 1, characterized in that: The second display area includes a first sub-display area and a second sub-display area, the second sub-display area is located between the first sub-display area and the first display area, the first gate driving circuit is located in the first sub-display area, and the second gate driving circuit is located in the second sub-display area; Preferably, the number of signals of the first pixel circuit is greater than the number of signals of the second pixel circuit; Preferably, the first pixel circuit includes a 7T1C circuit, and the second pixel circuit includes a 2T1C circuit.

3. The display panel according to claim 1, characterized in that: The display panel further includes: A first data line, located in the stretching area and in the first display area, the first data line connecting adjacent first pixel circuits; a first positive power line, located in the stretching area and in the first display area, the first positive power line connecting the adjacent first pixel circuit; a first negative power line, located in the stretching area and in the first display area, the first negative power line being connected to the adjacent first pixel circuit; Preferably, the first negative power line extends along a row direction, and the first data line and the first positive power line extend along a column direction.

4. The display panel according to claim 1, characterized in that: The display panel further includes: A second data line, located in the stretching area and in the second display area, the second data line connecting the adjacent second pixel circuits; a second positive power line, located in the stretching area and in the second display area, the second positive power line being connected to the adjacent second pixel circuit; a second negative power line, located in the stretching area and in the second display area, the second negative power line being connected to the adjacent second pixel circuit; Preferably, the second negative power line extends along a row direction, and the second data line and the second positive power line extend along a column direction.

5. The display panel according to claim 1, characterized in that: The first gate driving circuit includes a light emitting control circuit, and the first output signal line includes a light emitting control output signal line.

6. The display panel according to claim 5, characterized in that: The display panel further includes a plurality of first signal lines connected to the light emitting control circuit, and the plurality of first signal lines are distributed in a plurality of the stretching areas; Preferably, the plurality of first signal lines include a first high-level signal line, a first low-level signal line, a first clock signal line, a second clock signal line, and a light-emitting control input signal line.

7. The display panel according to claim 1, characterized in that: The second gate driving circuit includes a scanning circuit, and the second output signal line includes a scanning output signal line.

8. The display panel according to claim 7, characterized in that: The display panel further includes a plurality of second signal lines connected to the scanning circuit, and the plurality of second signal lines are distributed in a plurality of the stretching areas; Preferably, the plurality of second signal lines include a second high level signal line, a second low level signal line, a third clock signal line, a fourth clock signal line, and a scan input signal line.

9. A display module, characterized in that: Comprising a display panel as described in any one of claims 1-8.

10. A display device, characterized in that: Comprising the display module as claimed in claim 9.

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