CN212230037U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN212230037U CN212230037U CN202021035156.0U CN202021035156U CN212230037U CN 212230037 U CN212230037 U CN 212230037U CN 202021035156 U CN202021035156 U CN 202021035156U CN 212230037 U CN212230037 U CN 212230037U
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Abstract
The embodiment of the utility model discloses display panel and display device. The display panel includes: the display device comprises at least one auxiliary display area, a main display area and a non-display area adjacent to the auxiliary display area and the main display area, wherein the light transmittance of the auxiliary display area is greater than that of the main display area; the secondary display area comprises a boundary area and a non-boundary area, and the boundary area is an area adjacent to the non-display area in the secondary display area; the boundary region comprises a plurality of boundary sub-pixel units, the non-boundary region comprises a plurality of non-boundary sub-pixel units, and the main display region comprises a plurality of main screen sub-pixel units; in the sub-pixel units with the same light-emitting color, the current density of the light-emitting area of the boundary sub-pixel unit is smaller than that of the non-boundary sub-pixel unit, and the current density of the light-emitting area of the boundary sub-pixel unit is larger than that of the main screen sub-pixel unit. The embodiment of the utility model provides an improve display device's display area edge and have the problem of bright border, promoted display effect.
Description
Technical Field
The embodiment of the utility model provides a relate to the display technology, especially relate to a display panel and display device.
Background
Organic Light-Emitting Diode (OLED) display devices are widely used because of their advantages of self-luminescence, wide viewing angle, high contrast, low power consumption, high response rate, and full color.
However, the edge of the display area of the conventional OLED display device is easily provided with a bright edge, which affects the display effect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a display panel and display device to there is the problem of bright border at the display area edge that realizes improving display device, promotes the display effect.
In a first aspect, an embodiment of the present invention provides a display panel, including:
the display device comprises at least one auxiliary display area, a main display area and a non-display area adjacent to the auxiliary display area and the main display area, wherein the light transmittance of the auxiliary display area is greater than that of the main display area; the secondary display area comprises a boundary area and a non-boundary area, and the boundary area is an area adjacent to the non-display area in the secondary display area; the boundary region comprises a plurality of boundary sub-pixel units, the non-boundary region comprises a plurality of non-boundary sub-pixel units, and the main display region comprises a plurality of main screen sub-pixel units;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the current density of the light-emitting area of the boundary sub-pixel unit is smaller than that of the light-emitting area of the non-boundary sub-pixel unit, and the current density of the light-emitting area of the boundary sub-pixel unit is larger than that of the light-emitting area of the main screen sub-pixel unit.
Optionally, the density of the sub-pixel units in the sub-display area is equal to the density of the sub-pixel units in the main display area, and the area of the light emitting area of the sub-pixel units in the sub-display area is smaller than the area of the light emitting area of the sub-pixel units in the main display area:
the boundary sub-pixel unit comprises a boundary sub-pixel driving circuit, the non-boundary sub-pixel unit comprises a non-boundary sub-pixel driving circuit, and the main screen sub-pixel unit comprises a main screen sub-pixel driving circuit;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is smaller than the driving current output by the non-boundary sub-pixel driving circuit, and the driving current output by the non-boundary sub-pixel driving circuit is equal to the driving current output by the main screen sub-pixel driving circuit.
Optionally, the density of the sub-pixel units in the sub-display area is less than that of the sub-pixel units in the main display area;
the boundary sub-pixel unit comprises a boundary sub-pixel driving circuit, the non-boundary sub-pixel unit comprises a non-boundary sub-pixel driving circuit, and the main screen sub-pixel unit comprises a main screen sub-pixel driving circuit;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is smaller than the driving current output by the non-boundary sub-pixel driving circuit, and the driving current output by the boundary sub-pixel driving circuit is larger than the driving current output by the main screen sub-pixel driving circuit.
Optionally, when the same gray scale is displayed in the sub-pixel units with the same light-emitting color, the driving current output by the boundary sub-pixel driving circuit is 20% -90% of the driving current output by the non-boundary sub-pixel driving circuit.
Optionally, the boundary sub-pixel unit includes a first boundary sub-pixel and a second boundary sub-pixel, and the first boundary sub-pixel is located on a side of the second boundary sub-pixel adjacent to the non-display area;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the ratio of the driving current output by the driving circuit of the first boundary sub-pixel to the driving current output by the driving circuit of the non-boundary sub-pixel is a first ratio;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the ratio of the driving current output by the driving circuit of the second boundary sub-pixel to the driving current output by the driving circuit of the non-boundary sub-pixel is a second ratio;
the first ratio is less than the second ratio.
Optionally, the first ratio is 20% to 90%, and the second ratio is 50% to 90%.
Optionally, the boundary sub-pixel driving circuit and the non-boundary sub-pixel driving circuit each include at least two thin film transistors and at least one storage capacitor;
the at least two thin film transistors include a driving transistor.
Optionally, in the sub-pixel unit with the same emission color, the capacitance value of the storage capacitor of the boundary sub-pixel driving circuit is different from the capacitance value of the storage capacitor of the non-boundary sub-pixel driving circuit.
Optionally, in the sub-pixel unit of the same emission color, the width-to-length ratio of the channel region of the driving transistor of the boundary sub-pixel driving circuit is smaller than the width-to-length ratio of the channel region of the driving transistor of the non-boundary sub-pixel driving circuit.
In a second aspect, the embodiment of the present invention further provides a display device, including the present invention, which is an arbitrary embodiment of the display panel.
The embodiment of the utility model provides an in the sub-pixel unit through setting up same luminous colour, border sub-pixel drive circuit's driving force is less than non-border sub-pixel drive circuit's driving force for when the same demonstration drive signal of input, border sub-pixel unit's luminous luminance is less than the luminous luminance of non-border sub-pixel unit of the same luminous colour, has reduced border sub-pixel unit's luminous luminance in the border region, improves the bright border problem, promotes the display effect.
Drawings
Fig. 1 is a schematic diagram of a display panel provided in this embodiment;
FIG. 2 is a schematic diagram of another display panel provided in this embodiment;
fig. 3 is a schematic diagram of a pixel driving circuit provided in this embodiment;
fig. 4 is a schematic diagram of another pixel driving circuit provided in this embodiment;
fig. 5 is a schematic diagram of a display device provided in this embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The existing display device is generally provided with a transparent display area, an optical sensor such as a camera is arranged in the transparent display area, and a bright edge appears at the crossed edge of the transparent display area and the non-display area when the image is displayed, so that the display effect is influenced.
Based on the above problem, the present embodiment provides the following solutions:
the present embodiment provides a display panel, fig. 1 is a schematic diagram of the display panel provided in the present embodiment, fig. 2 is a schematic diagram of another display panel provided in the present embodiment, and referring to fig. 1 and fig. 2, the display panel includes:
at least one sub display region 10, a main display region 30, and a non-display region 20 adjacent to the sub display region 10 and the main display region 30, a light transmittance of the sub display region 10 being greater than a light transmittance of the main display region 20; the sub-display area 10 includes a boundary area 11 and a non-boundary area 12, the boundary area 11 is an area adjacent to the non-display area 30 in the sub-display area 10; the boundary region 11 includes a plurality of boundary sub-pixel units 110, the non-boundary region 12 includes a plurality of non-boundary sub-pixel units 120, and the main display region 30 includes a plurality of main screen sub-pixel units 310;
in the sub-pixel units of the same emitting color, when the same gray scale is displayed, the current density in the emitting region of the boundary sub-pixel unit 110 is less than that in the emitting region of the non-boundary sub-pixel unit 120, and the current density in the emitting region of the boundary sub-pixel unit 110 is greater than that in the emitting region of the main panel sub-pixel unit 310.
The sub-display area 10 is an area of the display panel where an optical sensor such as a camera is provided. The boundary region 11 may be a region formed by one row, or two rows, or a plurality of rows of boundary sub-pixel units 110 of the sub-display region 10 adjacent to the non-display region 20. In addition, each sub-pixel unit comprises a pixel driving circuit and a light-emitting structure, wherein the pixel driving circuit is used for providing a light-emitting driving signal for the light-emitting structure and driving the light-emitting structure to emit light. The luminous area of the sub-image unit is the luminous area of the luminous structure. The current density in the light emitting region is the ratio of the driving current flowing through the light emitting region to the area of the light emitting region.
Specifically, the transmittance is the ratio of the area of the light-transmitting region per unit area to the total area. The light transmittance of the sub display region 10 is greater than that of the main display region 30, and may be achieved by setting the sub display region 10 to have a smaller pixel density (fig. 1), or by setting the sub display region 10 to have the same pixel density as the main display region 30, sub pixel units in the sub display region 10 are achieved to have a smaller light emitting region area (fig. 2). In order to achieve the same display luminance of the sub display region 10 and the main display region 30 when displaying a picture, when the sub display region 10 has a smaller pixel density, the sub pixel unit of the sub display region 10 is generally set to have a larger driving current, and when the sub display region 10 has the same pixel density as the main display region, the sub pixel unit of the sub display region 10 is set to have the same driving current as the main display region 30.
In the present embodiment, by setting the current density of the light-emitting region of the boundary sub-pixel unit 110 to be less than the current density of the light-emitting region of the non-boundary sub-pixel unit 120 when displaying the same gray scale, the light-emitting luminance of the boundary sub-pixel unit 110 is less than the light-emitting luminance of the non-boundary sub-pixel unit 120 with the same color, the light-emitting luminance of the boundary sub-pixel unit 110 in the boundary region 11 is reduced, and the problem of bright edge is improved, and meanwhile, by setting the current density of the light-emitting region of the boundary sub-pixel unit 110 to be greater than the current density of the light-emitting region of the main-screen sub-pixel unit 310, it is ensured that the sub-display region 10 and the main display region 30 have a smaller.
It should be noted that fig. 1 only shows the size of the boundary region 11 by way of example, and the size of the boundary region 11 may be set as needed in other embodiments, which is not a display of the present invention. In addition, the present embodiment shows only one sub display area 10 by way of example, but the present invention is not limited thereto, and a plurality of sub display areas 10 may be provided in other embodiments.
Optionally, referring to fig. 1, the density of sub-pixel units in the sub-display area 10 is less than the density of sub-pixel units in the main display area 30;
the boundary sub-pixel unit 110 includes a boundary sub-pixel driving circuit, the non-boundary sub-pixel unit 120 includes a non-boundary sub-pixel driving circuit, and the main screen sub-pixel unit 310 includes a main screen sub-pixel driving circuit;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is smaller than the driving current output by the non-boundary sub-pixel driving circuit, and the driving current output by the boundary sub-pixel driving circuit is larger than the driving current output by the main screen sub-pixel driving circuit.
Specifically, the area of the light emitting region of the sub-pixel unit in the sub-display region 10 may be equal to the area of the light emitting region of the sub-pixel unit in the main display region 30, or the area of the light emitting region of the sub-pixel unit in the sub-display region 10 is close to the area of the light emitting region of the sub-pixel unit in the main display region 30, for example, the area of the light emitting region of the sub-pixel unit in the sub-display region 10 is slightly smaller than the area of the light emitting region of the sub-pixel unit in the main display region 30. When the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is smaller than the driving current output by the non-boundary sub-pixel driving circuit, and the driving current output by the boundary sub-pixel driving circuit is larger than the driving current output by the main-screen sub-pixel driving circuit, so that when the same gray scale is displayed, the display brightness of the boundary sub-pixel unit 111 is smaller than the display brightness of the non-boundary sub-pixel unit 112, the light-emitting brightness of the boundary sub-pixel unit 110 in the boundary region 11 is reduced, the problem of bright edge is solved, the display brightness of the boundary sub-pixel unit 111 is larger than the display brightness of the main-screen sub-pixel unit 310, the minor brightness difference between the minor display region 10 and the main display region 30 is ensured, and the display panel has a better display effect.
Optionally, referring to fig. 2, the density of the sub-pixel units in the sub-display area 10 is equal to the density of the sub-pixel units in the main display area 30, and the area of the light emitting area of the sub-pixel units in the sub-display area 10 is smaller than the area of the light emitting area of the sub-pixel units in the main display area 30;
the boundary sub-pixel unit 110 includes a boundary sub-pixel driving circuit, the non-boundary sub-pixel unit 120 includes a non-boundary sub-pixel driving circuit, and the main screen sub-pixel unit includes a main screen sub-pixel driving circuit;
in the sub-pixel units with the same light-emitting color, when the same display driving signal is input, the driving current output by the boundary sub-pixel driving circuit is smaller than the driving current output by the non-boundary sub-pixel driving circuit, and the driving current output by the non-boundary sub-pixel driving circuit is equal to the driving current output by the main screen sub-pixel driving circuit.
Specifically, when the same display driving signal is input, the driving current output by the non-boundary sub-pixel driving circuit is equal to the driving current output by the main-screen sub-pixel driving circuit, so that the non-boundary sub-pixel unit 120 and the main-screen sub-pixel unit 310 have the same display brightness, and the main display area 30 and the non-boundary area 12 are ensured to have the same display brightness. And when the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is smaller than the driving current output by the non-boundary sub-pixel driving circuit, so that when the same gray scale is displayed, the display brightness of the boundary sub-pixel unit 111 is smaller than that of the non-boundary sub-pixel unit 112, the light-emitting brightness of the boundary sub-pixel unit 110 in the boundary region 11 is reduced, and the bright edge problem is improved.
Optionally, in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is 20% -90% of the driving current output by the non-boundary sub-pixel driving circuit.
Specifically, when the same gray scale is displayed, the reduction of the driving current output by the boundary sub-pixel driving circuit is too much, so that the display luminance of the boundary sub-pixel unit 110 is too low compared with that of other sub-pixels of the same color, which may affect the image display quality of the sub-display area 10, and the reduction of the driving current output by the boundary sub-pixel driving circuit is too little, so that the display luminance of the boundary sub-pixel unit 110 is reduced less, and the improvement effect of the bright edge is poor. The driving current output by the boundary sub-pixel driving circuit is set to be 20% -90% of the driving current output by the non-boundary sub-pixel driving circuit, so that the good bright edge improvement effect is guaranteed, and meanwhile, the high picture display quality of the display panel is guaranteed.
Alternatively, referring to fig. 1 and 2, the boundary sub-pixel unit 110 includes a first boundary sub-pixel 111 and a second boundary sub-pixel 112, and the first boundary sub-pixel 111 is located at a side of the second boundary sub-pixel 112 adjacent to the non-display area 20;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the ratio of the driving current output by the driving circuit of the first boundary sub-pixel 111 to the driving current output by the non-boundary sub-pixel driving circuit is a first ratio;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the ratio of the driving current output by the driving circuit of the second boundary sub-pixel 112 to the driving current output by the non-boundary sub-pixel driving circuit is a second ratio;
the first ratio is less than the second ratio.
The first boundary sub-pixels 111 may be one or more rows of sub-pixel units closest to the non-display area in the boundary area 11, and the second boundary sub-pixels 112 may be one or more rows of sub-pixel units closest to the first boundary sub-pixels 111 in the boundary area 11. The first ratio is smaller than the second ratio, that is, the degree of reduction in the driving capability of the driving circuit of the first boundary subpixel 111 is greater than that of the driving circuit of the second boundary subpixel 112, and the degree of reduction in the emission luminance of the first boundary subpixel 111 is greater than that of the emission luminance of the second boundary subpixel 112.
Specifically, during displaying, the larger the contribution of the boundary sub-pixel unit 110 closer to the non-display area 20 to the bright edge, the smaller the first ratio is set to be the second ratio, that is, the luminance of the first boundary sub-pixel 111 closest to the non-display area 20 is greatly reduced, which may have a large improvement effect on the bright edge, the luminance of the second boundary sub-pixel 112 farther from the non-display area 20 is reduced to a smaller extent, so as to further improve the bright edge, and the luminance of the boundary sub-pixel unit is adjusted according to the contribution degree of different boundary sub-pixel units to the bright edge, so as to ensure the better improvement of the bright edge, and at the same time, further ensure the picture display quality of the sub-display area 10.
For example, referring to fig. 2, the first boundary sub-pixel 111 may be a row of sub-pixels of the boundary region 11 that is most adjacent to the non-display region 20, and the second boundary sub-pixel 112 may be a row of sub-pixels of the boundary region 111 that is immediately adjacent to the first boundary sub-pixel 111. The first and second boundary subpixels 111 and 112 may have the same or different emission colors.
For example, the first boundary subpixel 111 may be a green subpixel, and the second boundary subpixel 112 may be a red subpixel. When 5 displays the same gray scale, the ratio of the driving current output by the driving circuit of the first boundary sub-pixel unit 111 to the driving current output by the driving circuit of the green sub-pixel of the non-boundary region 12 is a first ratio. When the same gray scale is displayed at 5, the ratio of the driving current output by the driving circuit of the second boundary sub-pixel 112 to the driving current output by the driving circuit of the red sub-pixel of the non-boundary region 12 is a second ratio.
Optionally, the first ratio is 20% -90%, and the second ratio is 50% -90%.
Specifically, the image display quality of the sub-display area 10 may be affected by both the first ratio and the second ratio being too small, and the first ratio and the second ratio being too large, the display brightness of the first boundary sub-pixel 111 and the second boundary sub-pixel 112 is less reduced, and the improvement effect of the bright edge is poor. By setting the first ratio to be 20% -90% and the second ratio to be 50% -90%, the display panel is ensured to have high image display quality while a good bright edge improvement effect is ensured.
Optionally, the first ratio is 70% -90%, and the second ratio is 80% -90%.
If the sub-display area 10 and the main display area 30 are adjacent to the same side of the non-display area 20, if the display brightness of the boundary sub-pixel unit 110 of the sub-display area 10 is reduced too much, the display brightness of the main screen sub-pixel unit 310 located at the same boundary with the main display area 30 is likely to have a large difference, which affects the overall display effect of the display panel, and by setting the first ratio to be 70% -90% and the second ratio to be 80% -90%, the display panel is ensured to have a high picture display quality while ensuring a good bright edge improvement effect.
Optionally, the boundary sub-pixel driving circuit and the non-boundary sub-pixel driving circuit each include at least two thin film transistors and at least one storage capacitor;
the at least two thin film transistors include a driving transistor.
In particular, the driving transistor is used to supply a driving current to the light emitting structure. Fig. 3 is a schematic diagram of a pixel driving circuit provided in this embodiment, and referring to fig. 3, the driving circuit may include a first thin film transistor t1, a second thin film transistor t2, and a storage capacitor Cst. The second thin film transistor t2 is a driving transistor for supplying a driving current to the light emitting structure OLED. One end of the first thin film transistor t1 is used for inputting the display driving signal Vdata. The gate of the first thin film transistor t1 is used for inputting the SCAN signal SCAN, and the first power signal PVDD and the second power signal PVEE are used for supplying the power signals.
It should be noted that fig. 3 only shows the number and connection relationship of the thin film transistors and the storage capacitors by way of example, and is not a limitation of the present invention, and in other embodiments, the driving circuit may further include more than two thin film transistors and more than one storage capacitor, for example, six thin film transistors and one storage capacitor, or seven thin film transistors and one storage capacitor.
Optionally, in the sub-pixel unit of the same emission color, the capacitance value of the storage capacitor of the boundary sub-pixel driving circuit is different from the capacitance value of the storage capacitor of the non-boundary sub-pixel driving circuit.
Specifically, referring to FIG. 3, the current flowing in the storage capacitor is
According to the formula, C is the capacitance value of the storage capacitor, dU is the voltage change at two ends of the storage capacitor, and it can be seen from the formula that the current flowing through the storage capacitor can be changed by changing the capacitance value of the storage capacitor, so as to change the current flowing through the light emitting structure, that is, the driving current output by the driving circuit can be reduced by changing the capacitance value of the storage capacitor, and the driving capability of the boundary subpixel driving circuit is reduced.
In addition, a storage capacitance value
Wherein, S is the opposite area of the two polar plates of the storage capacitor, and d is the distance between the two polar plates of the storage capacitor. The capacitance value of the storage capacitor can be changed by changing the distance d between the two polar plates of the storage capacitor and/or changing the facing area S of the two polar plates. The size of the positive area S of the bipolar plate can be adjusted by only adjusting the shape of the mask in the etching process when the bipolar plate is manufactured, and the distance d between the two plates of the capacitor is adjusted by adjusting the positions of the film layers of the bipolar plate.
The driving capability of the boundary sub-pixel driving circuit is reduced by adjusting the storage capacitor of the boundary sub-pixel driving circuit, a display driving signal is not required to be changed, a large number of ICs and driving resources are not required to be occupied, the method can be realized by slightly changing the process during manufacturing the driving circuit, and the cost is reduced.
Optionally, in the sub-pixel unit of the same emission color, the width-to-length ratio of the channel region of the driving transistor of the boundary sub-pixel driving circuit is smaller than the width-to-length ratio of the channel region of the driving transistor of the non-boundary sub-pixel driving circuit.
Specifically, taking the 2T1C driving circuit shown in fig. 3 as an example, the driving current output by the driving circuit is I ═ K [ PVDD-Vdata- | Vth |, []2Wherein, in the step (A),
wherein
I.e. the width-to-length ratio of the channel region of the driving transistor. It can be seen from the formula that the driving current can be reduced by reducing the width-to-length ratio of the channel region of the driving transistor. Specifically, the aspect ratio of the channel region of the driving transistor can be reduced by increasing the length of the channel region of the driving transistor and/or reducing the width of the channel region of the driving transistor. The width and the length of the channel region can be adjusted only by adjusting the shape of the mask in the etching process when the driving transistor is manufactured.
The driving capability of the boundary sub-pixel driving circuit is reduced by reducing the width-to-length ratio of the channel region of the driving transistor, a display driving signal is not required to be changed, a large number of ICs and driving resources are not required to be occupied, the method can be realized by slightly changing the process during manufacturing the driving circuit, and the cost is reduced.
Optionally, the boundary sub-pixel driving circuit and the non-boundary sub-pixel driving circuit each include seven thin film transistors and a storage capacitor, and the driving transistors are P-type thin film transistors;
in the sub-pixel units with the same light-emitting color, the capacitance value of the storage capacitor of the boundary sub-pixel driving circuit is smaller than that of the storage capacitor of the non-boundary sub-pixel driving circuit.
Fig. 4 is a schematic diagram of still another pixel driving circuit provided in this embodiment, and referring to fig. 4, the driving circuit includes seven thin film transistors (T1, T2, T3, T4, T5, T6, and T7) and a storage capacitor Cst, and T3 is a driving transistor. Specifically, the driving process of the driving circuit can be divided into an initialization phase, a charging phase and a light-emitting phase. In the charging phase, Vdata charges the storage capacitor Cst through T2, T3 and T4, the voltage charged in the storage capacitor Cst is Vdata- | Vth |, and a negative voltage is applied to the positive electrode of the light emitting structure OLED, where Vth is the threshold voltage of the driving transistor. When the capacitance value of the storage capacitor Cst is decreased, the negative voltage charged to the storage capacitor Cst is increased, that is, the voltage of the gate electrode of the driving transistor (T3) is increased. The drive current I ═ K (Vsg | Vth |) of the drive circuit shown in fig. 42The Vsg is the voltage difference between the source and the gate, and it can be seen from the formula that when the gate voltage increases, the Vsg decreases, and the driving current decreases. Thus by reducing boundary sub-imagesThe driving capability of the boundary sub-pixel driving circuit can be reduced by the capacitance value of the storage capacitor of the pixel driving circuit.
The inventors found through experiments that when the capacitance value of the storage capacitor of the boundary subpixel driving circuit is reduced to 2/3% of the capacitance value of the storage capacitor of the non-boundary subpixel driving circuit, the driving current output by the boundary subpixel driving circuit can be reduced by 50%. When the width-to-length ratio of the channel region of the driving transistor of the boundary sub-pixel driving circuit is decreased to 1/2, the driving current output from the boundary sub-pixel driving circuit may be decreased by 10%.
This embodiment also provides a display device, fig. 5 is a schematic diagram of the display device provided in this embodiment, and referring to fig. 5, the display device 100 includes the display panel 200 provided in any embodiment of the present invention.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A display panel, comprising:
the display device comprises at least one auxiliary display area, a main display area and a non-display area adjacent to the auxiliary display area and the main display area, wherein the light transmittance of the auxiliary display area is greater than that of the main display area; the secondary display area comprises a boundary area and a non-boundary area, and the boundary area is an area adjacent to the non-display area in the secondary display area; the boundary region comprises a plurality of boundary sub-pixel units, the non-boundary region comprises a plurality of non-boundary sub-pixel units, and the main display region comprises a plurality of main screen sub-pixel units;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the current density of the light-emitting area of the boundary sub-pixel unit is smaller than that of the light-emitting area of the non-boundary sub-pixel unit, and the current density of the light-emitting area of the boundary sub-pixel unit is larger than that of the light-emitting area of the main screen sub-pixel unit.
2. The display panel according to claim 1, characterized in that:
the density of the sub-pixel units in the auxiliary display area is equal to that of the sub-pixel units in the main display area, and the area of the light emitting area of the sub-pixel units in the auxiliary display area is smaller than that of the light emitting area of the sub-pixel units in the main display area;
the boundary sub-pixel unit comprises a boundary sub-pixel driving circuit, the non-boundary sub-pixel unit comprises a non-boundary sub-pixel driving circuit, and the main screen sub-pixel unit comprises a main screen sub-pixel driving circuit;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is smaller than the driving current output by the non-boundary sub-pixel driving circuit, and the driving current output by the non-boundary sub-pixel driving circuit is equal to the driving current output by the main screen sub-pixel driving circuit.
3. The display panel according to claim 1, characterized in that:
the density of the sub-pixel units in the auxiliary display area is less than that of the sub-pixel units in the main display area;
the boundary sub-pixel unit comprises a boundary sub-pixel driving circuit, the non-boundary sub-pixel unit comprises a non-boundary sub-pixel driving circuit, and the main screen sub-pixel unit comprises a main screen sub-pixel driving circuit;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is smaller than the driving current output by the non-boundary sub-pixel driving circuit, and the driving current output by the boundary sub-pixel driving circuit is larger than the driving current output by the main screen sub-pixel driving circuit.
4. The display panel according to any one of claims 1 to 3, wherein:
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the driving current output by the boundary sub-pixel driving circuit is 20% -90% of the driving current output by the non-boundary sub-pixel driving circuit.
5. The display panel according to claim 4, wherein:
the boundary sub-pixel unit comprises a first boundary sub-pixel and a second boundary sub-pixel, and the first boundary sub-pixel is positioned on one side of the second boundary sub-pixel adjacent to the non-display area;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the ratio of the driving current output by the driving circuit of the first boundary sub-pixel to the driving current output by the driving circuit of the non-boundary sub-pixel is a first ratio;
in the sub-pixel units with the same light-emitting color, when the same gray scale is displayed, the ratio of the driving current output by the driving circuit of the second boundary sub-pixel to the driving current output by the driving circuit of the non-boundary sub-pixel is a second ratio;
the first ratio is less than the second ratio.
6. The display panel according to claim 5, wherein:
the first ratio is 20% -90%, and the second ratio is 50% -90%.
7. The display panel according to claim 1, characterized in that:
the boundary sub-pixel driving circuit and the non-boundary sub-pixel driving circuit both comprise at least two thin film transistors and at least one storage capacitor;
the at least two thin film transistors include a driving transistor.
8. The display panel according to claim 7, wherein:
in the sub-pixel units with the same light emitting color, the capacitance value of the storage capacitor of the boundary sub-pixel driving circuit is different from the capacitance value of the storage capacitor of the non-boundary sub-pixel driving circuit.
9. The display panel according to claim 7 or 8, characterized in that:
in the sub-pixel units of the same light-emitting color, the width-to-length ratio of the channel region of the driving transistor of the boundary sub-pixel driving circuit is smaller than that of the channel region of the driving transistor of the non-boundary sub-pixel driving circuit.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN202021035156.0U CN212230037U (en) | 2020-06-08 | 2020-06-08 | Display panel and display device |
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| CN202021035156.0U CN212230037U (en) | 2020-06-08 | 2020-06-08 | Display panel and display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113077749A (en) * | 2021-04-14 | 2021-07-06 | 云谷（固安）科技有限公司 | Display screen and electronic equipment |
| WO2021147738A1 (en) * | 2020-01-21 | 2021-07-29 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN113362764A (en) * | 2021-06-24 | 2021-09-07 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113963662A (en) * | 2021-08-27 | 2022-01-21 | 上海和辉光电股份有限公司 | Driving method and driving device of OLED device |
-
2020
- 2020-06-08 CN CN202021035156.0U patent/CN212230037U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147738A1 (en) * | 2020-01-21 | 2021-07-29 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN113077749A (en) * | 2021-04-14 | 2021-07-06 | 云谷（固安）科技有限公司 | Display screen and electronic equipment |
| CN113362764A (en) * | 2021-06-24 | 2021-09-07 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113963662A (en) * | 2021-08-27 | 2022-01-21 | 上海和辉光电股份有限公司 | Driving method and driving device of OLED device |
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