TWI684174B - Display panel - Google Patents

Abstract

A display panel includes a substrate, a plurality of first pixels and a plurality of second pixels. The substrate has a first display area and a second display area. The first pixels are disposed on the first display area. The second pixels are disposed on the second display area. The ratio of the transmittance of the second pixels to the transmittance of the first pixels is 0.33 to 0.66

Description

Display panel

The present invention relates to a display panel, and particularly to a display panel including two pixels.

At present, in order to increase the convenience of using products, many manufacturers combine display devices with cameras. For example, existing mobile phones or tablet computers often carry camera functions. In the existing mobile phones or tablet computers, in order to provide enough space for the frame area to set the front lens, the area of the display area is often limited. Specifically, holes are often drilled in the frame area of the display panel to set the camera lens. However, since the drilled portion does not have a display function, the area of the display area where the entire display device can display the screen is limited.

The invention provides a display panel, which can increase the area of the area where the display panel can display images.

At least one embodiment of the present invention provides a display panel, including a substrate, a plurality of first pixels, and a plurality of second pixels. The substrate has a first display area and a second Display area. The first pixel is located on the first display area. The second pixel is located on the second display area. The ratio of the transmission rate of the second pixel to the transmission rate of the first pixel is 0.33~0.66.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

10, 20, 30, 40 ‧‧‧ display panel

100‧‧‧ substrate

110‧‧‧First display area

120‧‧‧Second display area

130‧‧‧ District 3

200‧‧‧Optical Module

AA‧‧‧Display area

A1a, A1b‧‧‧First electrode

A2a, A2b‧‧‧Second electrode

BA‧‧‧ surrounding area

B1‧‧‧The first blue light-emitting diode

B2‧‧‧Second blue light-emitting diode

Cha, CHb‧‧‧channel layer

Da, Db‧‧‧ Jiji

Ea, Eb‧‧‧luminescent layer

DL1~DL6‧‧‧Data cable

G1‧‧‧The first green light-emitting diode

G2‧‧‧Second green light-emitting diode

GI‧‧‧Gate insulation

Ga, Gb‧‧‧ gate

H1, H2, O1, O2‧‧‧ opening

I1‧‧‧First insulation layer

I2‧‧‧Second insulation layer

L1‧‧‧The first light-emitting area

L2‧‧‧Second light-emitting area

P1‧‧‧ First pixel

P2‧‧‧ Second pixel

P3‧‧‧ third pixel

PDL‧‧‧ pixel definition layer

R1‧‧‧The first red light-emitting diode

R2‧‧‧Second red light-emitting diode

Sa, Sb‧‧‧Source

SL‧‧‧scan line

T1~T6‧‧‧Switch element

TR‧‧‧penetration zone

FIG. 1A is a schematic top view of a display panel according to an embodiment of the invention.

FIG. 1B is a partial schematic top view of a display panel according to an embodiment of the invention.

FIG. 1C is a partial schematic top view of a display panel according to an embodiment of the invention.

Fig. 1D is a schematic cross-sectional view taken along the lines AA' and BB' of Fig. 1C.

2A is a schematic partial top view of a display panel according to an embodiment of the invention.

2B is a schematic partial top view of a display panel according to an embodiment of the invention.

3 is a partial schematic top view of a display panel according to an embodiment of the invention.

4 is a partial schematic top view of a display panel according to an embodiment of the invention.

FIG. 1A is a schematic top view of a display panel according to an embodiment of the invention.

Please refer to FIG. 1A, the substrate 100 of the display panel 10 has a display area AA, and the display area AA has a first display area 110 and a second display area 120. In the embodiment of FIG. 1A, the second display area 120 is located outside the first display area 110, but the present invention is not limited to this and adjusts the first display area 110 according to different design or product requirements The relative position relationship with the second display area 120. For example, in this embodiment, the second display area 120 surrounds the first display area 110. In another embodiment, the first display area 110 may be located at a side or a corner of the second display area 120. In this embodiment, the substrate 100 further includes a peripheral area BA located on at least one side of the display area AA, and the peripheral area BA can be used to set a driving circuit, but the invention is not limited thereto. In other embodiments, the substrate 100 does not include the peripheral area BA.

FIG. 1B is a partial schematic top view of a display panel according to an embodiment of the invention. FIG. 1C is a partial schematic top view of a display panel according to an embodiment of the invention. FIG. 1B is a partially enlarged schematic view of the display panel of FIG. 1A near the first display area 110, and FIG. 1C is an enlarged schematic view of the first pixel, the second pixel, and surrounding components in FIG. 1B. Fig. 1D is a schematic cross-sectional view taken along the lines AA' and BB' of Fig. 1C.

1B ~ 1D, the display panel 10 includes a substrate 100, a plurality of first pixels P1 and a plurality of second pixels P2. The first pixel P1 is located on the substrate 100 and on the first display area 110. The second pixel P2 is located on the substrate 100 and on the second display area 120.

In this embodiment, the first pixel P1 includes a first light-emitting area L1 and a penetration area TR. The first light emitting region L1 includes a first blue light emitting diode B1, a first green light emitting diode G1, and a first red light emitting diode R1. The penetrating region TR is, for example, adjacent to the first blue light-emitting diode B1. The second pixel P2 includes a second light-emitting area L2. The second light emitting region L2 includes a second blue light emitting diode B2, a second green light emitting diode G2, and a second red light emitting diode R2.

In this embodiment, the first pixel P1 further includes switching elements T1~T3. open The off elements T1~T3 are electrically connected to the scanning line SL, and are electrically connected to the data lines DL1~DL3, respectively. The switching elements T1 to T3 are electrically connected to the first red light-emitting diode R1, the first blue light-emitting diode B1, and the first green light-emitting diode G1, respectively. In this embodiment, the first blue light-emitting diode B1, the first green light-emitting diode G1, and the first red light-emitting diode R1 are organic light-emitting diodes, but the invention is not limited thereto. In other embodiments, the first blue light-emitting diode B1, the first green light-emitting diode G1, and the first red light-emitting diode R1 are inorganic light-emitting diodes (or miniature light-emitting diodes μLED). In this embodiment, the first pixel P1 is an active organic light-emitting diode, but the invention is not limited thereto. In other embodiments, the first pixel P1 is a passive organic light-emitting diode.

In this embodiment, the second pixel P2 further includes switching elements T4~T6. The switching elements T4 to T6 are electrically connected to the scanning line SL, and are electrically connected to the data lines DL4 to DL6, respectively. The switching elements T4 to T6 are electrically connected to the second red light emitting diode R2, the second blue light emitting diode B2, and the second green light emitting diode G2, respectively. In this embodiment, the second blue light-emitting diode B2, the second green light-emitting diode G2, and the second red light-emitting diode R2 are organic light-emitting diodes, but the invention is not limited thereto. In other embodiments, the second blue light-emitting diode B2, the second green light-emitting diode G2, and the second red light-emitting diode R2 are inorganic light-emitting diodes (or miniature light-emitting diodes μLED). In this embodiment, the second pixel P2 is an active organic light-emitting diode, but the invention is not limited thereto. In other embodiments, the second pixel P2 is a passive organic light-emitting diode.

The switching elements T1~T6 have a similar structure, and the first blue light emitting diode The body B1, the first green light emitting diode G1, the first red light emitting diode R1, the second blue light emitting diode B2, the second green light emitting diode G2, and the second red light emitting diode R2 have similar Structure.

Referring to FIG. 1D, the switching element T1 includes a channel layer CHa, a gate Ga, a source Sa, and a drain Da. In essence, the gate Ga is electrically connected to the scan line SL (the cross-sectional angle of FIG. 1D cannot show the connection relationship). The gate electrode Ga overlaps the channel layer CHa, and a gate insulating layer GI is sandwiched between the gate electrode Ga and the channel layer CHa. The source electrode Sa and the drain electrode Da are located on the channel layer CHa, and are electrically connected to the channel layer CHa. The source electrode Sa is electrically connected to the data line DL1. The switching element T4 includes a channel layer CHb, a gate Gb, a source Sb, and a drain Db. The gate Gb is electrically connected to the scan line SL. The gate electrode Gb overlaps the channel layer CHb, and a gate insulating layer GI is sandwiched between the gate electrode Gb and the channel layer CHb. The source electrode Sb and the drain electrode Db are located on the channel layer CHb, and are electrically connected to the channel layer CHb. The source Sb is electrically connected to the data line DL4.

In this embodiment, the switching elements T1 to T6 are exemplified by bottom gate type thin film transistors, but the invention is not limited thereto. In other embodiments, the switching elements T1 ˜ T6 may also be top gate type or other types of thin film transistors. In this embodiment, the switching elements T1~T6 are based on amorphous silicon thin film transistors, but the invention is not limited to this. In another embodiment, the switching elements T1~T6 may also be low temperature polysilicon Thin film transistor or oxide semiconductor thin film transistor.

The first red light emitting diode R1 is electrically connected to the switching element T1. The first red light emitting diode R1 includes a first electrode A1a, a light emitting layer Ea, and a second electrode A2a. The first insulating layer I1 is located on the gate insulating layer GI, the source electrode Sa and the drain electrode Da. First The second insulating layer I2 is located on the first insulating layer I1. The first electrode A1a is located on the second insulating layer I2 and is electrically connected to the drain electrode Da of the switching element T1 through the opening O1. The opening O1 penetrates the first insulating layer I1 and the second insulating layer I2. The pixel definition layer PDL is located on the second insulating layer I2 and has an opening H1. The light-emitting layer Ea is located in the opening H1 and is electrically connected to the first electrode A1a. The second electrode A2a is located on the pixel definition layer PDL, and is electrically connected to the light-emitting layer Ea.

The second red light emitting diode R2 is electrically connected to the switching element T4. The second red light emitting diode R2 includes a first electrode A1b, a light emitting layer Eb, and a second electrode A2b. The first insulating layer I1 is located on the gate insulating layer GIb, the source Sb and the drain Db. The first electrode A1b is located on the second insulating layer I2 and is electrically connected to the drain electrode Db of the switching element T4 through the opening O2. The opening O2 penetrates the first insulating layer I1 and the second insulating layer I2. The pixel definition layer PDL has an opening H2. The light emitting layer Eb is located in the opening H2 and is electrically connected to the first electrode A1b. The second electrode A2b is located on the pixel definition layer PDL, and is electrically connected to the light-emitting layer Eb.

In this embodiment, the area of the first light-emitting region L1 is approximately equal to the total light-emitting area of the light-emitting layers of the first blue light-emitting diode B1, the first green light-emitting diode G1, and the first red light-emitting diode R1. It can also be said that the area of the first light-emitting area L1 is defined by the pixel definition layer PDL. In this embodiment, the area of the second light-emitting area L2 includes the total light-emitting area of the light-emitting layers of the second blue light-emitting diode B2, the second green light-emitting diode G2, and the second red light-emitting diode R2. It can also be said that the area of the second light emitting area L2 is defined by the pixel definition layer PDL.

Adjust the area of the first light-emitting area L1, the area of the penetrating area TR, and the second The area of the light-emitting area L2 can make the first pixel P1 and the second pixel P2 have different transmittances.

In this embodiment, the area of the second light-emitting area L2 is approximately equal to the area of the first light-emitting area L1, and the first pixel P1 includes the penetration area TR in addition to the first light-emitting area L1. In other words, the area of the first pixel P1 is larger than the area of the second pixel P2. In this embodiment, the light emitting area of the first blue light emitting diode B1 is substantially equal to the light emitting area of the second blue light emitting diode B2, and the light emitting area of the first green light emitting diode G1 is substantially equal to the second green light emitting The light emitting area of the diode G2, the light emitting area of the first red light emitting diode R1 is substantially equal to the light emitting area of the second red light emitting diode R2, but the invention is not limited thereto.

In this embodiment, the areas of the first pixel P1 and the second pixel P2 are approximately equal to the area surrounded by the corresponding two scanning lines and the corresponding two data lines, but the invention is not limited thereto. In some embodiments, the areas of the first pixel P1 and the second pixel P2 are defined by the pixel definition layer PDL.

The transmissive area TR is an area of the first pixel P1 that has a larger transmissivity than the first light emitting area L1, and its area is defined by the second electrode, for example. For example, the second electrodes of the light-emitting diodes are integrated with each other, and the integrated second electrode has an opening at the penetration region TR, so that the penetration region TR has a higher penetration rate. In other embodiments, in addition to not providing the second electrode, the penetrating region TR may also have no other layers at the same time, such as a light-emitting layer, a first electrode, and various insulating layers. In other words, the light-emitting layer, the first electrode, each insulating layer and the like may also have openings at the penetration region TR, so that the penetration region TR has a higher penetration rate. In this embodiment, the area of the penetrating region TR can be regarded as the second The opening area of the electrode, but the invention is not limited thereto. In another embodiment, the area of the penetrating region TR can also be defined by the pixel definition layer PDL.

In this embodiment, the display panel 10 further includes an optical module 200, and the position of the optical module 200 corresponds to the first display area 110. The first display area 110 can also be referred to as a camera area, and light can pass through the first display area 110 to reach the optical module 200. The optical module 200 is, for example, a charge-coupled device (Charge-coupled Device), a three-dimensional sensing device (3D sensor), an iris recognition device, or the like.

In some embodiments, the penetration area TR occupies about 1/3~2/3 of the area of the first pixel P1, and the first light-emitting area L1 occupies about 2/3~1/3 of the area of the first pixel P1. The ratio of the transmission rate of the second pixel P2 to the transmission rate of the first pixel P1 is 0.33 to 0.66. For example, the penetration rate of each second pixel P2 (or the average penetration rate of the second display area 120) and the penetration rate of each first pixel P1 (or the average penetration rate of the first display area 110) The ratio of the rate is 0.33~0.66.

When the ratio of the transmittance of the second pixel P2 to the transmittance of the first pixel P1 is less than 0.33, the transmittance of the first pixel P1 is too large, resulting in poor image quality of the first display area 110 . For example, when the transmissivity of the first pixel P1 or the area ratio of the transmissive area increases, the image clarity will decrease accordingly. Once the difference in the transmissivity between the first pixel P1 and the second pixel P2 becomes larger, the image analysis between the first display area 110 and the second display area 120 will also be different, even affecting the viewer Visual comfort and the image quality of the display panel 10. In addition, when the ratio of the transmittance of the second pixel P2 to the transmittance of the first pixel P1 is greater than 0.66, the transmittance of the first pixel P1 is too small, which may cause The amount of light received is insufficient. therefore, In this embodiment, when the transmittance ratio of the second pixel P2 to the first pixel P1 is between 0.33 and 0.66, the display panel 10 can ensure good display quality, and can also take into account the corresponding display area 110. The performance of the optical module 200. As a whole, the average transmittance ratio of the second display area 120 to the first display area 110 is between 0.33 and 0.66, so that the display panel 10 can also have the display quality and the performance of the optical film set 200.

Specifically, since the penetration rate of the first pixel P1 is greater than that of the second pixel P2, when the shooting function is to be performed, the image can pass through the first pixel P1 and reach the optical module 200. In addition, the first pixel P1 has a display function. For example, the first pixel P1 on the first display area 110 may display icons, such as battery power, network signals, or other images. In other words, while the first pixel P1 achieves the display function, it can also retain functions such as photography and sensing.

Based on the above, since the display panel 10 includes the first pixel P1 and the second pixel P2 with different transmittances, the area of the area capable of displaying a picture can be increased, thereby obtaining the advantage of a narrow frame or no frame to form a full screen.

In some embodiments, the first pixel P1 and the second pixel P2 have the same brightness. Different color LEDs have different aging conditions. When the aging problem occurs, algorithms or circuits can be used to compensate, to avoid the problem of the lifetime of the LEDs affecting the display quality.

2A is a schematic partial top view of a display panel according to an embodiment of the invention. 2B is a schematic partial top view of a display panel according to an embodiment of the invention. FIG. 2B is an enlarged schematic diagram of the first pixel, the second pixel and the surrounding elements in FIG. 2A. It must be noted here that the embodiments of FIGS. 2A and 2B follow FIGS. 1A~FIG. The element reference numbers and partial contents of the 1D embodiment, wherein the same or similar reference numerals are used to denote the same or similar elements, and the description of the same technical contents is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, which will not be repeated here.

2A and 2B, in this embodiment, the area of the first pixel P1 of the display panel 20 is approximately equal to the area of the second pixel P2.

In this embodiment, the area of the second light emitting area L2 is larger than the area of the first light emitting area L1. In this embodiment, the light emitting area of the second blue light emitting diode B2 is larger than that of the first blue light emitting diode B1, and the light emitting area of the second green light emitting diode G2 is larger than the first green light emitting diode The light emitting area of the body G1 and the light emitting area of the second red light emitting diode R2 are larger than the light emitting area of the first red light emitting diode R1, but the invention is not limited thereto.

In some embodiments, the penetration area TR occupies about 1/3~2/3 of the area of the first pixel P1, and the first light-emitting area L1 occupies about 2/3~1/3 of the area of the first pixel P1. The ratio of the transmission rate of the second pixel P2 to the transmission rate of the first pixel P1 is 0.33 to 0.66. In this way, the display panel 20 can have both image quality and the light receiving amount of the optical module 20.

Based on the above, since the display panel 20 includes the first pixel P1 and the second pixel P2 with different transmittances, the area of the area where the screen can be displayed can be increased, thereby improving the image quality of the display panel 20 and obtaining a narrow border Or the advantage of no border.

3 is a partial schematic top view of a display panel according to an embodiment of the invention. It must be noted here that the embodiment of FIG. 3 continues to use the element numbers and partial contents of the embodiments of FIGS. 1A to 1D, wherein the same or similar reference numbers are used to indicate the same or similar elements, and the same technical content is omitted. Instructions. About omitted parts Please refer to the foregoing embodiments for descriptions, and will not repeat them here.

Please refer to FIG. 3, in this embodiment, in order to make the resolution difference between the first display area 110 and the second display area 120 of the display panel 30 smaller, the distance d1 between the first pixels P1 is smaller than the adjacent The distance d2 between the two pixels P2. More specifically, since the area of the first pixel P1 is larger than the area of the second pixel P2, if the resolutions of the first display area 110 and the second display area 120 are the same, the pitch d1 is smaller than the pitch d2.

In some embodiments, the ratio of the interval d1 between adjacent first pixels P1 to the interval d2 between adjacent second pixels P2 is 0.33 to 0.66.

Based on the above, since the display panel 30 includes the first pixel P1 and the second pixel P2, the display device 30 has a higher transmittance and can increase the area of the area where the screen can be displayed, thereby improving the display panel 30 Image quality, and get the advantages of narrow borders or no borders.

4 is a partial schematic top view of a display panel according to an embodiment of the invention. It must be noted here that the embodiment of FIG. 4 continues to use the element labels and partial contents of the embodiments of FIGS. 1A to 1D, wherein the same or similar reference numerals are used to indicate the same or similar components, and the same technical content is omitted. Instructions. For the description of the omitted parts, reference may be made to the foregoing embodiments, which will not be repeated here.

Referring to FIG. 4, the substrate 100 of the display panel 40 has a third area 130. The third area 130 is located between the first display area 110 and the second display area 120. The display panel 30 further includes a third pixel P3. The third pixel P3 is located on the third area 130.

The penetration rate of the third pixel P3 is between the penetration rate of the first pixel P1 and the penetration rate of the second pixel P2. In some embodiments, the penetration area can be adjusted Area to control the penetration rate of the third pixel P3. For example, the area of the penetration area of the third pixel P1 is smaller than the area of the penetration area of the first pixel P1. In this embodiment, the area of the third pixel P3 is between the area of the first pixel P1 and the area of the second pixel P2.

The setting of the third pixel P3 can make the images generated by the display panel 40 more continuous, so that there can be no obvious lines between the images generated by different pixels.

In summary, since the display panel of the present invention includes the first pixel and the second pixel with different transmittances, the area of the area where the screen can be displayed can be increased, thereby improving the image quality of the display panel and obtaining a narrow border Or the advantage of no border.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

10‧‧‧Display panel

100‧‧‧ substrate

110‧‧‧First display area

120‧‧‧Second display area

P1‧‧‧ First pixel

P2‧‧‧ Second pixel

Claims (13)

A display panel includes: a substrate having a first display area, a second display area and a third display area, wherein the third display area is located between the first display area and the second display area; A first pixel is located on the first display area; a plurality of second pixels is located on the second display area, wherein the transmittance of the second pixels and the penetration of the first pixels The ratio of the ratio is 0.33~0.66; and a plurality of third pixels are located on the third display area, wherein the penetration rates of the third pixels are between the penetration rates of the first pixels and the ones Between the penetration rate of the second pixel. The display panel according to item 1 of the patent application scope, wherein the area of each third pixel is between the area of each first pixel and the area of each second pixel. The display panel as described in item 1 of the patent application scope, wherein the first pixels and the second pixels have the same brightness. The display panel according to item 1 of the patent application scope, wherein the area of each first pixel is larger than the area of each second pixel. The display panel as described in item 4 of the patent application, wherein each of the first pixels includes a first light-emitting area and a penetrating area, the penetrating area occupies 1/3 to 2 of the area of the first pixel 3. The display panel as described in item 5 of the patent application, wherein each of the second pixels includes a second light-emitting area, and the area of the second light-emitting area is equal to the area of the first light-emitting area. The display panel as described in item 1 of the patent application scope, wherein the area of each first pixel is approximately equal to the area of each second pixel. The display panel as described in item 7 of the patent application, wherein each of the first pixels includes a first light-emitting area and a penetration area, and the penetration area occupies 1/3~2 of the area of the first pixel /3. The display panel as described in item 8 of the patent application, wherein each of the second pixels includes a second light-emitting area, and the area of the second light-emitting area is larger than the area of the first light-emitting area. The display panel as described in item 1 of the patent application range, wherein the spacing between adjacent first pixels is smaller than the spacing between adjacent second pixels. The display panel as described in item 10 of the patent application range, wherein the ratio between the spacing between the adjacent first pixels and the spacing between the adjacent second pixels is 0.33 to 0.66. The display panel as described in item 1 of the patent application, wherein each of the first pixels includes a first light-emitting area and a transmission area, the first light-emitting area includes a first blue light-emitting diode, a first A green light emitting diode and a first red light emitting diode, wherein the penetrating region is adjacent to the first blue light emitting diode. A display panel includes: a substrate having a first display area and a second display area; A plurality of first pixels are located on the first display area; a plurality of second pixels are located on the second display area, wherein the transmittance of the second pixels and the penetration of the first pixels The ratio of the transmittance is 0.33~0.66; and an optical module, the setting position corresponds to the first display area.

Images