Patent Application
20180211598
The present disclosure relates to liquid crystal display technology, and more particularly to an organic diode display driving circuit, a display panel, and an electronic device.
Active matrix organic light-emitting diode (OLED) panels generally includes very thin organic coating layers and a glass substrate. When the current passes by, the organic material emits light. The OLED panels are characterized by self-light-emitting, wide viewing angle, and high saturation. In particular, the driving voltage is low and the power consumption is low. In addition, the OLED panels also have the advantages such as quick response time, light weight, thin thickness, simple structure, and low lost, and thus have been deemed as the most potential product.
OLED panels include a normal pixel area (AA pixel area) and a virtual pixel area. The virtual pixel area is designed to alleviate the loading effect during the manufacturing process of the matrix substrate so as to enhance the uniformity of the high-precision metallic masking plate during evaporation processes. In regard to pixel compensation circuits, generally, the signals lines within the pixel area circuit are connected with a fixed level such that the thin film transistors (TFTs) are turned off and the virtual pixel area is in a dark state.
However, as the distances between each of the pixels within the AA pixel area and the pixel source are different, which results in that the voltage drops caused by the wirings are different. Thus, the display uniformity of the panel may be affected.
The present disclosure relates to an organic diode display driving circuit, a display panel, and an electronic device for enhancing the display uniformity of the panels.
In one aspect, an organic diode display driving circuit includes: a voltage source, a display-area circuit, and an auxiliary-area circuit being arranged outside a display area; the display-area circuit and the auxiliary-area circuit include power-supply wirings, signal wirings, and at least one pixel, and the voltage source connects to the pixel within the display area via the power-supply wirings; and the voltage source further directly or indirectly connects to the pixel within the display area via the wirings in an auxiliary area.
Wherein the voltage source directly or indirectly to the pixel in the display area via the signal wirings in the auxiliary area.
Wherein the signal wirings in the auxiliary area includes one of or a combination comprising some of the scanning lines, an initial-voltage line, a light-emitting control line and a data line.
Wherein the power-supply wirings include row power-supply lines and column power-supply lines arranged along rows and columns, and the column power-supply lines and the row power-supply lines are connected, the column power-supply lines and the row power-supply lines connect to the voltage source; and the scanning lines, the initial voltage line, and the light-emitting control line in the auxiliary area respectively connect to the two voltage lines in the auxiliary area such that the voltage source indirectly connects to the pixel in the display area via the wirings in the auxiliary area.
Wherein the data lines are arranged along the columns, one end of the data line connects to the voltage line, and the other end connects to the other voltage line, and/or the other end of the data line connects to the row power-supply line on a different layer via a contact hole.
Wherein the power-supply wirings include row power-supply lines and column power-supply lines arranged along rows and columns, and the column power-supply lines and the row power-supply lines are connected; and the scanning lines, the initial voltage line, and/or the light-emitting control line in the auxiliary area connect to the row power-supply line on the different layer via a contact hole such that the voltage source indirectly connects to the pixel in the display area via the wirings in the auxiliary area.
Wherein the circuit further includes the voltage line arranged at one side of the display area, the voltage source connects to the voltage line, and one end of the column power-supply line or the row power-supply line connects to the voltage line; the scanning lines in the auxiliary area, a vi line, an EM line connects directly or indirectly to the column power-supply lines on different layers further include: the scanning lines, the initial voltage line, the light-emitting control line on the first layer, and the column power-supply line are connected, and the data lines on the second layer are connected with the row power-supply line, at the same time, the column power-supply lines and the row power-supply lines on different layers are connected via at least one contact hole such that the voltage source indirectly connects to the pixel in the display area via the signal wirings in the auxiliary area.
Wherein the scanning lines, the initial voltage line, and the light-emitting control line respectively connect to the voltage line.
In another aspect, a display panel includes: an organic diode display driving circuit includes: a voltage source, a display-area circuit, and an auxiliary-area circuit being arranged outside a display area; the display-area circuit and the auxiliary-area circuit include power-supply wirings, signal wirings, and at least one pixel, and the voltage source connects to the pixel within the display area via the power-supply wirings; and the voltage source further directly or indirectly connects to the pixel within the display area via the wirings in an auxiliary area.
Wherein the voltage source directly or indirectly to the pixel in the display area via the signal wirings in the auxiliary area.
Wherein the signal wirings in the auxiliary area includes one of or a combination of some of the scanning lines, an initial-voltage line, a light-emitting control line and a data line.
Wherein the power-supply wirings include row power-supply lines and column power-supply lines arranged along rows and columns, and the column power-supply lines and the row power-supply lines are connected, the column power-supply lines and the row power-supply lines connect to the voltage source; and the scanning lines, the initial voltage line, and the light-emitting control line in the auxiliary area respectively connect to the two voltage lines in the auxiliary area such that the voltage source indirectly connects to the pixel in the display area via the wirings in the auxiliary area.
Wherein the data lines are arranged along the columns, one end of the data line connects to the voltage line, and the other end connects to the other voltage line, and/or the other end of the data line connects to the row power-supply line on a different layer via a contact hole.
Wherein the power-supply wirings include row power-supply lines and column power-supply lines arranged along rows and columns, and the column power-supply lines and the row power-supply lines are connected; and the scanning lines, the initial voltage line, and/or the light-emitting control line in the auxiliary area connect to the row power-supply line on the different layer via a contact hole such that the voltage source indirectly connects to the pixel in the display area via the wirings in the auxiliary area.
Wherein the circuit further includes the voltage line arranged at one side of the display area, the voltage source connects to the voltage line, and one end of the column power-supply line or the row power-supply line connects to the voltage line; the scanning lines in the auxiliary area, a vi line, an EM line connects directly or indirectly to the column power-supply lines on different layers further include: the scanning lines, the initial voltage line, the light-emitting control line on the first layer, and the column power-supply line are connected, and the data lines on the second layer are connected with the row power-supply line, at the same time, the column power-supply lines and the row power-supply lines on different layers are connected via at least one contact hole such that the voltage source indirectly connects to the pixel in the display area via the signal wirings in the auxiliary area.
In another aspect, an electronic device includes: a display device comprising an organic diode display driving circuit, the organic diode display driving circuit includes: a voltage source, a display-area circuit, and an auxiliary-area circuit being arranged outside a display area; the display-area circuit and the auxiliary-area circuit include power-supply wirings, signal wirings, and at least one pixel, and the voltage source connects to the pixel within the display area via the power-supply wirings; and the voltage source further directly or indirectly connects to the pixel within the display area via the wirings in an auxiliary area.
Wherein the voltage source directly or indirectly to the pixel in the display area via the signal wirings in the auxiliary area.
Wherein the signal wirings in the auxiliary area includes one of or a combination comprising some of the scanning lines, an initial-voltage line, a light-emitting control line and a data line.
Wherein the power-supply wirings include row power-supply lines and column power-supply lines arranged along rows and columns, and the column power-supply lines and the row power-supply lines are connected, the column power-supply lines and the row power-supply lines connect to the voltage source; and the scanning lines, the initial voltage line, and the light-emitting control line in the auxiliary area respectively connect to the two voltage lines in the auxiliary area such that the voltage source indirectly connects to the pixel in the display area via the wirings in the auxiliary area.
Wherein the data lines are arranged along the columns, one end of the data line connects to the voltage line, and the other end connects to the other voltage line, and/or the other end of the data line connects to the row power-supply line on a different layer via a contact hole.
By configuring the wirings in the auxiliary area to connect to the voltage line, the resistance of the power-supply wirings in the display area may be reduced so as to eliminate the voltage drop of the power-supply wirings in the display area.
Embodiments of the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown.
Specifically, the signal wirings 150 in the auxiliary area includes one of or a combination including some of the first scanning line 151, a second scanning line 152, an initial-voltage line 153, a light-emitting control line 154 and a data line 155.
The power-supply wirings 140 include row power-supply lines 142 and column power-supply lines 141 arranged along the rows and the columns, and the column power-supply lines 141 and the row power-supply lines 142 are connected. In addition, the column power-supply lines 141 and the row power-supply lines 142 connect to the voltage source 110, wherein the column power-supply lines 141 and the row power-supply lines 142 are connected by a first contact hole 181.
The first scanning line 151, the second scanning line 152, the initial-voltage line 153, the light-emitting control line 154 are arranged at a first layer of the chip, that is, are on the same layer with the column power-supply lines 141. The data line 155 is arranged at a second layer of the chip, that is, on the same layer with the row power-supply lines 142.
In the embodiment, one wide wirings 190 is arranged at a left side of the auxiliary area for connecting ends of the first scanning line 151, the second scanning line 152, the initial-voltage line 153, and the light-emitting control line 154 to a voltage line 171 such that the voltage source 110 may be indirectly connected with the pixel 160 in the display area via the wirings in the auxiliary area, including the first scanning line 151, the second scanning line 152, the initial-voltage line 153, the light-emitting control line 154, and the data line 155.
Further, the data line 155 are arranged along a column direction, wherein one end of the data line 155 connects to one voltage line 171, and the other end of the data line 155 connects to another voltage line 172, and/or the other end of the data line 155 connects to the power-supply wirings 140 on different layers via a second contact hole 182.
Taking the display area and the auxiliary area in the lower left portion as one example, one end of the signal wirings 150 connects to one voltage line 171, and the other end of the signal wirings 150 connects to another voltage line 172. The voltage source 110 provides a certain voltage to the pixel 160 in the display area via the signal wirings 150 and two voltage lines in the auxiliary area, and the power-supply wirings in the display area. In this way, the serious voltage-drop issue of the pixel 160 in the display area caused by the wirings may be eliminated so as to enhance the uniformity of the display panel.
It can be understood that the data line 155 may not be connected to the voltage lines or the power-supply wirings 140. The voltage source 110 connects to the pixel 160 within the display area directly or indirectly via the signal wirings 150 other than the data line 155 within the auxiliary area. Alternatively, the voltage source 110 connects directly or indirectly to the pixel 160 via the data line 155 within the auxiliary area.
The signal wirings 2050 include one of or a combination of some of the first scanning line 2051, a second scanning line 2052, an initial voltage line 2053, a light-emitting control ling 2054 and the data line 2055.
The power-supply wirings 2040 include row power-supply lines 2041 and column power-supply lines 2042 arranged along the rows and the columns, and the row power-supply lines 2041 and the column power-supply lines 2042 are connected.
The signal wirings 2050 within the auxiliary area directly connect to the power-supply wirings 2040 such that the voltage source indirectly connects to the pixel 2060 within the display area via the wirings within the auxiliary area, such as the first scanning line 2051, the second scanning line 2052, the initial voltage line 2053, the light-emitting control ling 2054, and the data line 2055.
The connections between the signal wirings 2050 in the auxiliary area and the power-supply wirings 2040 will be described hereinafter. In an example, the wirings 2101 having different line-widths may be configured between the first scanning line 2051, the second scanning line 2052, the initial voltage line 2053, the light-emitting control ling 2054 on the first layer, and the row power-supply lines 2041 such that the signal wirings are connected to the row power-supply lines 2041. One section of wirings 2102 is configured between the data line 2055 on the second layer and the column power-supply lines 2042 such that the data line 2055 on the second layer and the column power-supply lines 2042 are connected. At the same time, the row power-supply lines 2041 on the different layers connect to the column power-supply lines 2042 via a contact hole 2080.
As shown in
The voltage line is arranged at one side of the display area. The voltage source 2010 connects to the voltage line 2070, and one end of the row power-supply lines 2041 or the column power-supply lines 2042 connects to the voltage line 2070.
Taking the display area and the auxiliary area in the lower left portion as one example, the signal wirings 2050 in the auxiliary area connect to the voltage line 2070. When the circuit is connected, the first scanning line 2051, the second scanning line 2052, the initial voltage line 2053, the light-emitting control ling 2054 in the auxiliary area connect to the row power-supply lines 2041 so as to supply the pixel 2060. The data line 2055 connects to the column power-supply lines 2042, and the column power-supply lines 2042 connects to the row power-supply lines 2041 to supply to the pixel 2060 in the display area. In this way, the serious voltage drop issue with respect to the wirings in the display area may be eliminated so as to enhance the display uniformity of the panel.
In other embodiment, wide wirings 2090 may be configured.
The organic diode display driving circuit 31 may include the configuration in
After the display panel 30 is electrified, the pixels in the display area in the organic diode display driving circuit 31 emit lights via the power-supply wirings. At the same time, as the signal wirings are adopted to supplement the voltage consumed by the wirings in the display area toward the pixels in the display area, the display uniformity of the display panel 30 may be enhanced.
After the electronic device is electrified, the pixels in the display area emit lights via the operations of the organic diode display driving circuit 42 such that the display performance of the display panel 41 may be enhanced.
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2016107010287 | Aug 2016 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2016/108335 | 12/2/2016 | WO | 00 |
