Array substrate, display panel and display device
The present disclosure provides an array substrate, a display panel and a display device. The array substrate comprises: a plurality of pixel units arranged in rows and columns; and a plurality of cascaded shift register units, the plurality of shift register units and the rows of pixel units having one-to-one correspondence therebetween. The shift register unit comprises a plurality of shift register elements, and for each shift register unit, at least one shift register element in the shift register unit is provided within at least one pixel unit among the row of pixel units corresponding to the shift register unit. A width of a non-display region occupied by the shift register units of the present disclosure is reduced, which is beneficial to realization of a narrow bezel.
1. An array substrate, comprising:
a plurality of pixel units arranged in rows and columns; and
a plurality of cascaded shift register units, the plurality of shift register units and the rows of pixel units having one-to-one correspondence therebetween, wherein
each shift register unit comprises a plurality of shift register elements, and for each shift register unit, at least one shift register element in the shift register unit is provided inside at least one pixel unit among the row of pixel units corresponding to the shift register unit,
wherein the plurality of shift register elements of each shift register unit comprise an input transistor, a pull-up transistor, a storage capacitor, a pull-down transistor and a pull-down control transistor, and the input transistor, the pull-up transistor, the pull-down transistor and the pull-down control transistor are respectively provided inside different pixel units, and
in a N-th stage shift register unit, a second electrode of the input transistor is connected with a first terminal of the storage capacitor; a gate of the pull-up transistor is connected with the first terminal of the storage capacitor, a first electrode of the pull-up transistor is connected with a clock signal input terminal of the shift register unit, and a second electrode of the pull-up transistor is connected with a N-th gate line of a display region; a second terminal of the storage capacitor is connected with the N-th gate line; a first electrode of the pull-down transistor is connected with the N-th gate line, and a second electrode of the pull-down transistor is connected with a low level input terminal of the shift register unit; a first electrode of the pull-down control transistor is connected with the first terminal of the storage capacitor, and a second electrode of the pull-down control transistor is connected with the low level input terminal of the shift register unit; wherein N is a positive integer.
2. The array substrate according to claim 1 , wherein for each shift register unit, all the shift register elements in the shift register unit are provided inside at least one pixel unit among the row of pixel units corresponding to the shift register unit.
3. The array substrate according to claim 2 , wherein a number of the shift register elements provided inside a same pixel unit is at most two.
4. The array substrate according to claim 1 , wherein an organic electroluminescent device is provided in the pixel unit, and the shift register element provided inside the pixel unit is provided beneath an anode layer of the organic electroluminescent device.
5. The array substrate according to claim 4 , further comprising a plurality of signal lines for providing signals to the shift register units, wherein at least one of the signal lines is provided in the display region of the array substrate, and the signal lines are insulated and spaced apart from gate lines of the display region.
6. The array substrate according to claim 5 , wherein the signal lines and data lines of the display region are provided in a same layer, the signal lines do not intersect with the data lines, and at most two of the signal lines are provided between any two adjacent data lines.
7. The array substrate according to claim 4 , wherein
when N=1, in a first stage shift register unit, a gate and a first electrode of the input transistor are connected with a frame start signal line for proving a frame start signal, and a gate of the pull-down transistor and a gate of the pull-down control transistor are both connected with a second gate line;
when N is an integer greater than 1 and smaller than a total number of the shift register units, in the N-th stage shift register unit, the gate and the first electrode of the input transistor are connected with a (N−1)-th gate line, and the gate of the pull-down transistor and the gate of the pull-down control transistor are both connected with a (N+1)-th gate line;
when N equals the total number of the shift register units, in the N-th stage shift register unit, the gate and the first electrode of the input transistor are connected with a (N−1)-th gate line, and the gate of the pull-down transistor and the gate of the pull-down control transistor are both connected with a reset signal line for providing a reset signal to the N-th stage shift register unit.
8. The array substrate according to claim 1 , further comprising a plurality of signal lines for providing signals to the shift register units, wherein at least one of the signal lines is provided in the display region of the array substrate, and the signal lines are insulated and spaced apart from gate lines of the display region.
9. The array substrate according to claim 8 , wherein the signal lines and data lines of the display region are provided in a same layer, the signal lines do not intersect with the data lines, and at most two of the signal lines are provided between any two adjacent data lines.
10. The array substrate according to claim 1 , wherein
when N=1, in a first stage shift register unit, a gate and a first electrode of the input transistor are connected with a frame start signal line for proving a frame start signal, and a gate of the pull-down transistor and a gate of the pull-down control transistor are both connected with a second gate line;
when N is an integer greater than 1 and smaller than a total number of the shift register units, in the N-th stage shift register unit, the gate and the first electrode of the input transistor are connected with a (N−1)-th gate line, and the gate of the pull-down transistor and the gate of the pull-down control transistor are both connected with a (N+1)-th gate line;
when N equals the total number of the shift register units, in the N-th stage shift register unit, the gate and the first electrode of the input transistor are connected with a (N−1)-th gate line, and the gate of the pull-down transistor and the gate of the pull-down control transistor are both connected with a reset signal line for providing a reset signal to the N-th stage shift register unit.
11. A display panel, comprising the array substrate according to claim 1 .
12. The display panel according to claim 11 , wherein an organic electroluminescent device is provided in the pixel unit, the shift register element provided inside the pixel unit is provided beneath an anode layer of the organic electroluminescent device; the display panel further comprises a packaging layer covering the array substrate and a cover plate provided on the packaging layer.
13. A display device, comprising the display panel according to claim 12 .
14. The display panel according to claim 11 , further comprising a plurality of signal lines for providing signals to the shift register units, wherein at least one of the signal lines is provided in the display region of the array substrate, and the signal lines are insulated and spaced apart from gate lines of the display region.
15. The display panel according to claim 14 , wherein the signal lines and data lines of the display region are provided in a same layer, the signal lines do not intersect with the data lines, and at most two of the signal lines are provided between any two adjacent data lines.
16. The display panel according to claim 11 , wherein
when N=1, in a first stage shift register unit, a gate and a first electrode of the input transistor are connected with a frame start signal line for proving a frame start signal, and a gate of the pull-down transistor and a gate of the pull-down control transistor are both connected with a second gate line;
when N is an integer greater than 1 and smaller than a total number of the shift register units, in the N-th stage shift register unit, the gate and the first electrode of the input transistor are connected with a (N−1)-th gate line, and the gate of the pull-down transistor and the gate of the pull-down control transistor are both connected with a (N+1)-th gate line;
when N equals the total number of the shift register units, in the N-th stage shift register unit, the gate and the first electrode of the input transistor are connected with a (N−1)-th gate line, and the gate of the pull-down transistor and the gate of the pull-down control transistor are both connected with a reset signal line for providing a reset signal to the N-th stage shift register unit.
17. A display device, comprising the display panel according to claim 11 .