CN110783364B - Display device and electronic apparatus - Google Patents
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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Abstract
The embodiment of the application provides a display device and electronic equipment, wherein the display device comprises a first display area, a second display area, a first driving chip and a second driving chip; the first display area comprises a micro light-emitting diode; the second display region includes an organic light emitting diode; the first driving chip is electrically connected with the first display area and is used for driving the micro light-emitting diode to display images; the second driving chip is electrically connected with the second display area and is used for driving the organic light emitting diode to display images; the light transmittance of the first display area is greater than that of the second display area. Because the luminous intensity of the micro light-emitting diode is far greater than that of the organic light-emitting diode, the maximum brightness of the first display area is not obviously lower than that of the second display area, and the brightness uniformity of the first display area and the second display area is good. Meanwhile, the two display areas are respectively driven by the two driving chips, so that the two display areas can be better controlled.
Description
Technical Field
The present disclosure relates to electronic technologies, and particularly to a display device and an electronic apparatus.
Background
With the development of communication technology, electronic devices such as smart phones are becoming more and more popular. In the using process of the electronic equipment, the electronic equipment can display the picture by using the display screen of the electronic equipment.
For better display effect and user experience, the size of the display screen is larger and larger, but the display screen of the electronic device is difficult to hold after exceeding a certain size, so that the screen occupation ratio of the display screen is more and more important to be improved. In the related art, a camera is provided below a light-transmitting portion of a display device, and the camera acquires an image of ambient light transmitted through the light-transmitting portion. The display device needs to be specially processed corresponding to the light transmission part of the camera to improve the light transmission rate of the light transmission part, but the problem of brightness reduction is caused by the improvement of the light transmission rate, and the maximum brightness difference between the light transmission part of the display device and other parts is large.
Disclosure of Invention
The embodiment of the application provides a display device and an electronic device, which can improve the maximum brightness difference between a first display area and a second display area.
An embodiment of the present application provides a display device, which includes:
a first display area including a micro light emitting diode;
a second display area adjacent to the first display area, the second display area including an organic light emitting diode;
the first driving chip is electrically connected with the first display area and used for driving the micro light-emitting diode to display images; and
the second driving chip is electrically connected with the second display area and used for driving the organic light emitting diode to display images;
the light transmittance of the first display area is greater than that of the second display area.
An embodiment of the present application further provides an electronic device, which includes:
a display device as described above;
the optical sensor is arranged opposite to the first display area and transmits an optical signal through the first display area.
In the embodiment of the application, the first display area and the second display area can display contents, the display area is complete, the screen occupation ratio of the display device is high, the light transmittance of the first display area is greater than that of the second display area, the first display area can be used for transmitting signals by the optical sensor, meanwhile, the first display area displays images through the micro light-emitting diode, the second display area displays images through the organic light-emitting diode, because the light-emitting intensity of the micro light-emitting diode is far greater than that of the organic light-emitting diode, the maximum brightness of the first display area cannot be obviously lower than that of the second display area, the maximum brightness of the first display area is close to that of the second display area, and the brightness uniformity of the first display area and the second display area is good. Meanwhile, the two display areas are respectively driven by the two driving chips, so that the two display areas can be better controlled.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a schematic view of a first structure of a display device according to an embodiment of the present disclosure.
Fig. 3 is a schematic view of a second structure of a display device according to an embodiment of the present disclosure.
Fig. 4 is a partial structural diagram of the X portion of the display device of fig. 2.
Fig. 5 is a schematic view of a first stacked structure of a first display area of a display device according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a second stacked structure of a first display area of a display device according to an embodiment of the present application.
Fig. 7 is a schematic diagram of a third stacked structure of a first display area of a display device according to an embodiment of the present application.
Fig. 8 is a first stacking diagram of a partial structure of a display device according to an embodiment of the present application.
Fig. 9 is a second stacking diagram of a partial structure of a display device according to an embodiment of the present application.
Fig. 10 is a third schematic stacked view of a partial structure of a display device according to an embodiment of the present application.
Fig. 11 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 12 is a schematic diagram of a fourth stacked structure of a first display area of a display device according to an embodiment of the present application.
Fig. 13 is a schematic diagram of a fifth stacked structure of a first display area of a display device according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides an electronic device and a display device thereof, wherein the electronic device can comprise a display device and an optical sensor (such as a camera and the like), and the optical sensor transmits an optical signal through the display device. It can be understood that the conventional display device has a low light transmittance, and the optical sensor has a poor effect of transmitting an optical signal through the display device. Therefore, the display device can be arranged in different regions, for example, the light transmittance of the portion of the display device corresponding to the optical sensor is set to be greater than the light transmittance of other positions of the display device, so that the effect of the optical sensor for transmitting the optical signal can be improved. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The electronic device provided by the embodiment of the application can be a mobile terminal device such as a mobile phone and a tablet personal computer, and can also be a device with a display device such as a game device, an Augmented Reality (AR) device, a Virtual Reality (VR) device, an on-vehicle computer, a notebook computer, a data storage device, an audio playing device, a video playing device and a wearable device, wherein the wearable device can be an intelligent bracelet and intelligent glasses.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. Fig. 1 shows an example in which the electronic apparatus is a mobile phone, wherein the display device 20 includes a first display area 220 and a second display area 240, and a light transmittance of the first display area 220 is greater than a light transmittance of the second display area 240. An optical sensor 30, such as a camera, is disposed in the electronic device 10, and the optical sensor 30 is used for transmitting signals through the first display area 220. For example, the optical sensor 30 is a camera, a lens of the camera is disposed toward the first display area 220, and the camera is configured to acquire an external light signal transmitted through the first display area 220 for imaging. It can also be understood that a camera is disposed below the first display area 220 of the display device 20, and the camera is configured to acquire an external light signal transmitted through the first display area 220 of the display device 20 and to form an image according to the acquired external light signal. The side of the display device 20 facing the outside may be substantially all display sides, that is, the display side of the first display area 220 and the display side of the second display area 240 may occupy the entire front side of the display device, and it may also be understood that the electronic device 10 is a full-screen device, and the display area of the display device 20 is complete, so that the screen occupation ratio of the display device 20 is improved. For example, the camera may be a front camera of the electronic device, and the camera may be used to obtain images of a user, such as a self-photograph, through the first display area 220 of the display device 20. The optical sensor 30 may be at least one of a camera, a proximity optical sensor, a light optical sensor, a ranging optical sensor, a fingerprint recognition optical sensor, and the like.
In order to more fully understand the display device of the embodiments of the present application. The display device will be described in detail below.
Referring to fig. 2, fig. 2 is a first structural schematic diagram of a display device according to an embodiment of the present disclosure. The display device 20 in the embodiment of the present application may include a first display area 220 and a second display area 240 that are adjacent. The first display area 220 and the second display area 240 may be used to display text or images, and the first display area 220 and the second display area 240 may display the same image together, for example, the second display area 240 displays a part of a preset image, and the first display area 220 displays the rest of the preset image. The first display area 220 and the second display area 240 may also display different images, for example, the second display area 240 displays a preset image, and the first display area 220 displays a taskbar image. Both the first display area 220 and the second display area 240 can display contents, the display area is complete, and the screen occupation ratio of the display device 20 is high. The second display area 240 may be disposed around the first display area 220, and the peripheries of the first display area 220 may all be adjacent to the second display area 240, i.e., the first display area 220 is located in the middle of the second display area 240. The second display area 240 may also partially surround the first display area 220, and a part of the edge of the first display area 220 is adjacent to the second display area 240, for example, the first display area 220 is located at a corner of the display device 20 or located in the middle of the top end of the display device 20.
The light transmittance of the first display area 220 is greater than that of the second display area 240, the first display area 220 can be used for the optical sensor to transmit signals, and meanwhile, the first display area 220 includes Micro light-Emitting diodes (Micro leds), and the second display area 240 includes organic light-Emitting diodes (OLEDs), that is, the first display area 220 displays images through the Micro leds, and the second display area 240 displays images through the organic leds, because the light-Emitting intensity of the Micro leds is much greater than that of the organic leds, the maximum luminance of the first display area 220 is not significantly lower than that of the second display area 240, the maximum luminance of the first display area 220 and the second display area 240 is similar, and the uniformity of the first display area 220 and the second display area 240 is good.
Referring to fig. 3, fig. 3 is a second structural schematic diagram of a display device according to an embodiment of the present disclosure. The display device 20 further includes a first driving chip 262 and a second driving chip 264, wherein the first driving chip 262 is electrically connected to the first display area 220 and is used for driving the micro light emitting diodes to display images. The second driving chip 264 is electrically connected to the second display area 240 and is used for driving the organic light emitting diode to display an image. Because the processes and designs of the micro light-emitting diode and the organic light-emitting diode cannot be compatible, two display areas need to be controlled by two driving chips respectively, each display area is controlled by a separate control chip, and the driving chip can be controlled most appropriately corresponding to the display areas, so that the two display areas can be controlled better.
The first driving chip 262 and the second driving chip 264 are located at opposite ends of the display device 20. The second driving chip 264 is generally disposed at the bottom of the display device 20, the first display area 220 is generally disposed at the top of the display device 20, and if the first driving chip 262 is also disposed at the bottom of the display device 20, the micro light emitting diode of the first display area 220 needs to be connected to the first driving chip 262 by a long first signal line, and the first signal line necessarily passes through the second display area 240 and intersects with a second signal line driving the organic light emitting diode in the second display area 240, which is likely to cause mutual interference and affect the display effect. Therefore, the first driving chip 262 and the second driving chip 264 are disposed at two opposite ends of the display device 20, which is beneficial to separating two different driving chips and signal lines and reducing mutual interference. And the first driving chip 262 is disposed on the top of the display device 20, and the second driving chip 264 is disposed on the bottom of the display device 20, so as to facilitate the signal lines between the first display area 220 and the second display area 240, and the first signal line between the first driving chip 262 and the first display area 220 can be shorter and completely isolated from the second signal line of the second display area 240, thereby improving the isolation between the first signal line and the second signal line.
Referring to fig. 4, fig. 4 is a partial structural diagram of a portion X of the display device of fig. 2. In order to allow the optical sensor to better transmit the optical signal through the first display region 220, the light transmittance of the first display region 220 is as greater as possible than that of the second display region 240. However, in order to make the luminance uniformity of the first display region 220 and the second display region 240, the maximum luminance of the two regions cannot be different too much. Since the light emitting intensity of the micro light emitting diodes 222 is much higher than that of the organic light emitting diodes 242, and the size of the micro light emitting diodes 222 is very small and much smaller than that of the organic light emitting diodes 242, even if the distribution density of the micro light emitting diodes 222 in the first display area 220 is equal to that of the organic light emitting diodes 242, the light transmittance of the first display area 220 is much greater than that of the second display area 240 because the area (which can be understood as open window) in the first display area 220 where the micro light emitting diodes 222 are not disposed is very large, i.e., the proportion of the high light transmittance area in the first display area 220 where no pixels are disposed is very high. Also, since the micro light emitting diode 222 emits light with a much higher intensity than the organic light emitting diode 242, although the micro light emitting diode 222 is small in size, the maximum luminance of the first display region 220 may be not less than the maximum luminance of the second display region 240 or only slightly less than the maximum luminance of the second display region 240. The maximum luminance refers to the maximum luminance per unit area.
Therefore, the distribution density of the micro light emitting diodes 222 can be set as desired. For example, the distribution density of the micro light emitting diodes 222 of the first display region 220 is not greater than the distribution density of the organic light emitting diodes 242 of the second display region 240, and the maximum luminance per unit area of the first display region 220 may also be not less than the maximum luminance per unit area of the second display region 240. That is, the distribution density of the micro light emitting diodes 222 is equal to or less than the distribution density of the organic light emitting diodes 242 to improve the light transmittance of the first display region 220, but the distribution density of the micro light emitting diodes 222 is not very small, and the maximum luminance per unit area of the first display region 220 may be greater than or equal to or slightly less than the maximum luminance per unit area of the second display region 240.
Illustratively, through experimental tests, because of the small size of the micro light emitting diode, the window of the first display area can occupy more than 95% of the total area, and the light transmittance is greatly enhanced. Meanwhile, the first display area can reach more than 80% of light transmittance.
Referring to fig. 5, fig. 5 is a schematic view of a first stacked structure of a first display area of a display device according to an embodiment of the present disclosure. The first display area 220 further includes a first substrate 221, the micro light emitting diodes 222 are disposed on the first substrate 221, the first display area 220 further includes a first driving unit 224 for driving the micro light emitting diodes 222, the first driving unit 224 is disposed between the first substrate 221 and the micro light emitting diodes 222, and the micro light emitting diodes 222 are at least partially disposed opposite to the first driving unit 224.
Since the first driving unit 224 includes the opaque portion, the light transmittance of the micro light emitting diode 222 is also not high, and therefore, the first driving unit 224 and the micro light emitting diode 222 having low light transmittance are at least partially disposed opposite to each other, and the opaque portion is disposed in an overlapping manner, so that more portions with high light transmittance are exposed, and the overall light transmittance of the first display area 220 is improved.
The micro light emitting diode 222 has a first orthographic projection on the first substrate 221, the first driving unit 224 has a second orthographic projection on the first substrate 221, and one of the first orthographic projection and the second orthographic projection is located in the other, which can also be understood that the micro light emitting diode 222 and the first driving unit 224 are arranged in an overlapping manner. When the size of the micro light emitting diode 222 is larger than the size of the first driving unit 224, the second orthographic projection is within the first orthographic projection, i.e. the micro light emitting diode 222 covers the first driving unit 224. When the size of the micro light emitting diode 222 is smaller than the second driving unit, the first orthographic projection is located within the second orthographic projection.
It should be noted that the first driving unit 224 may select different driving circuits according to needs, and some of the driving circuits may obtain better display effect, but are more complex and larger in size. Part of the driving circuit is simpler, the size is small, and the display effect is general. Similarly, the micro-leds 222 have different sizes due to process problems, and therefore, the micro-leds 222 with different sizes can be selected according to the requirements.
Referring to fig. 6, fig. 6 is a schematic diagram of a second stacked structure of a first display area of a display device according to an embodiment of the present application. A light shielding block 226 may be further disposed between the micro light emitting diode 222 and the first driving unit 224, the light shielding block 226 is disposed at least partially opposite to the first driving unit 224, and the light shielding block 226 is used for shielding the light signal irradiated to the first driving unit 224. Because the first driving unit 224 includes a light-tight portion, when an external light signal is irradiated onto the first driving unit 224, refraction and reflection occur, and further, a lot of stray light is generated, which affects the imaging quality of the image optical sensor 30. A light shielding block 226 is disposed between the first driving unit 224 and the micro light emitting diode 222, and the light shielding block 226 may be made of a black light absorbing material, so as to shield and absorb the light signal irradiated to the first driving unit 224 and reduce the generation of stray light.
The size of the light shielding block 226 may be equal to or slightly larger than the size of the first driving unit 224, so as to completely shield the first driving unit 224, and it can also be understood that the first driving unit 224 has a second orthographic projection on the first substrate 221, and the light shielding block 226 has a third orthographic projection on the first substrate 221, and the second orthographic projection is located in the third orthographic projection. The light shielding block 226 completely shields the first driving unit 224, so that a large amount of stray light can be reduced, and the quality of the light signal transmitted through the first display area 220 can be improved.
Referring to fig. 7, fig. 7 is a schematic diagram of a third stacked structure of a first display area of a display device according to an embodiment of the present application. The first display area 220 may further include an electro-variable color block 228, the electro-variable color block 228 is located on a side of the micro light-emitting diode 222 away from the first substrate 221, the electro-variable color block 228 is disposed corresponding to the micro light-emitting diode 222, the electro-variable color block 228 is used for switching between displaying a first color and being colorless and transparent, and the electro-variable color block 228 of the first color is used for blocking light signals irradiated to the micro light-emitting diode 222. The first color may be a dark color such as black, dark blue, etc. The electrochromic block 228 can be switched between the first color and colorless and transparent, and when the first display area 220 displays an image, the electrochromic block 228 can be black, so as to prevent light emitted by the micro light emitting diode 222 from being irradiated to the first driving unit 224 or reflected therein, and affecting the display effect. When the optical sensor 30 transmits a signal, the electrochromic color cell 228 may be colorless and transparent, facilitating the optical sensor 30 to transmit and/or receive a light signal through the first display area 220. When the first display region 220 does not display an image and the optical sensor 30 does not transmit a signal, the electro-variable color cell 228 may be black for blocking devices inside the display device 20.
The micro light emitting diode 222 has a first orthographic projection on the first substrate 221, the first driving unit 224 has a second orthographic projection on the first substrate 221, the electro-variable color block 228 has a fourth orthographic projection on the first substrate 221, and the first orthographic projection and the second orthographic projection are both located in the fourth orthographic projection. The electrochromic block 228 may be disposed only opposite to the first driving unit 224 and the micro light emitting diode 222, that is, the three are overlapped with each other, and the electrochromic block 228 may be disposed slightly larger than the first driving unit 224 and the micro light emitting diode 222, or may cover the whole layer.
Referring to fig. 8, fig. 8 is a first stacking diagram of a partial structure of a display device according to an embodiment of the present disclosure. The first display area 220 may further include a first common electrode layer 282, where the first common electrode layer 282 is used to drive the micro light emitting diodes 222 in cooperation with other components, and exemplarily, the first common electrode layer 282 may be understood as a cathode layer, and an anode layer formed in cooperation with other components drives the micro light emitting diodes 222 in common. The first common electrode layer 282 includes an auxiliary conductive portion 2824 and a plurality of first conductive bumps 2822, the auxiliary conductive portion 2824 has a plurality of openings corresponding to the plurality of micro light emitting diodes 222, a first conductive bump 2822 is disposed in each opening, each first conductive bump 2822 is adjacent to one micro light emitting diode 222, and the auxiliary conductive portion 2824 is electrically connected to the plurality of first conductive bumps 2822.
The second display area 240 may further include a second common electrode layer 284, and the second common electrode layer 284 may be understood as a cathode layer, and cooperates with an anode layer formed by other components to drive the organic light emitting diodes 242. The second common electrode layer 284 includes a plurality of second conductive pieces 2842, each second conductive piece 2842 is adjacent to an organic light emitting diode 242, the plurality of second conductive pieces 2842 are electrically connected, and the thickness of the second conductive piece 2842 is greater than that of the first conductive piece 2822.
The thickness of the first conductive piece 2822 is smaller than that of the second conductive piece 2842, the light transmittance of the first conductive piece 2822 is greater than that of the second conductive piece 2842, and meanwhile, the plurality of first conductive pieces 2822 are electrically connected through the auxiliary conductive part 2824, so that the impedance of the first common electrode layer 282 can be reduced, the light transmittance of the first conductive pieces 2822 is improved, and the impedance of the first common electrode layer 282 is controlled. It should be noted that, the thickness of the first conductive block 2822 is smaller than the thickness of the second conductive block 2842, the impedance (resistance) of the first conductive block 2822 is greater than the impedance of the second conductive block 2842, which causes a larger voltage drop than the first conductive block 2822, which is not favorable for the voltages of the plurality of first conductive blocks 2822 to be equal or similar, the plurality of first conductive blocks 2822 are electrically connected through the auxiliary conductive part 2824, the area of the first common electrode layer 282 is increased, the impedance of the first common electrode layer 282 is reduced, and the voltage drop of the first conductive block 2822 at different positions in the first common electrode layer 282 is reduced.
The first conductive portion 2824 only needs to be electrically connected to the plurality of first conductive portions 2822, so as to reduce the impedance of the entire first common electrode layer 282, the material selection range of the auxiliary conductive portion 2824 may be larger than that of the first conductive portion 2822, and the material of the auxiliary conductive portion 2824 may be selected to be larger than that of the first conductive portion 2822, so that the light transmittance of the auxiliary conductive portion 2824 is larger than that of the first conductive portion 2822. For example, the material of the first conductive block 2822 is magnesium metal, silver metal, or the like. The auxiliary conductive portions 2824 may be made of a transparent conductive material such as Indium Tin Oxide (ITO).
The first conductive block 2822 may be implemented by sputtering an ultra-thin metal. For example, the first conductive block 2822 is obtained by sputtering ultra-thin metal magnesium or metal silver.
The second conductive block 2842 may tile the entire second display area 240 by one layer. The second conductive blocks may be disposed only corresponding to the organic light emitting diodes, and then the plurality of second conductive blocks may be electrically connected through other wires. As shown in fig. 9.
The first conductive block may have a multi-layer structure. Illustratively, the first conductive block includes at least a first metal layer, a second metal layer and a third metal layer which are arranged in a stacked manner, the material of the first metal layer is different from that of the second metal layer, and the material of the second metal layer is different from that of the third metal layer. For example, the first metal layer and the third metal layer are both made of magnesium metal, and the second metal layer is made of silver metal. The conductivity of the first conductive block can be ensured, and better light transmittance can be realized, and the cost is reduced. The first conductive block may also adopt other laminated structures, for example, the materials of the first metal layer and the third metal layer are both metallic silver, and the material of the second metal layer is metallic magnesium. The first conductive block may have a single-layer structure, a two-layer structure, a four-layer structure, or the like. In addition, the first conductive block may be obtained by providing indium zinc oxide.
The auxiliary conductive portion connecting the plurality of first conductive blocks may serve to reduce the impedance of the entire first common electrode layer, and therefore, the lower the impedance of the auxiliary conductive portion, the better. The auxiliary conductive part can be formed by selecting a material with resistivity smaller than that of the first conductive block, namely, the resistivity of the auxiliary conductive part is smaller than that of the first conductive block, the resistivity of the material of the auxiliary conductive part is smaller than that of the material of the first conductive block, and therefore the impedance of the auxiliary conductive part and the impedance of the whole first common electrode layer can be reduced. The thickness of the auxiliary conductive part may be the same as or different from the thickness of the first conductive block.
The impedance of the auxiliary conductive portion may also be reduced by increasing the total volume of the auxiliary conductive portion. The surface area of the auxiliary conductive part is difficult to increase, and the total volume of the auxiliary conductive part can be increased by increasing the thickness of the auxiliary conductive part, namely the thickness of the auxiliary conductive part is larger than that of the first conductive block, so that the impedance of the auxiliary conductive part per se is reduced, and the impedance of the whole first common electrode layer is reduced. The resistivity of the auxiliary conductive part may be the same as or different from that of the first conductive block.
In order to reduce the resistance of the auxiliary conductive portion, it is possible to select a material having a low resistivity and increase the thickness of the auxiliary conductive portion. That is, the resistivity of the auxiliary conductive portion may be less than the resistivity of the first conductive block, while the thickness of the auxiliary conductive portion is greater than the thickness of the first conductive block. On the basis of not changing the impedance of the first conductive block, the impedance of the whole first common electrode layer is reduced as much as possible by reducing the impedance of the auxiliary conductive part. In the actual test, the impedance per unit area of the first conductive block is 280 ohms, and the impedance per unit area of the first conductive block is 1 ohm after the first conductive block is combined with the auxiliary conductive part.
The thickness of the auxiliary conductive portion may be the same as or greater than the thickness of the second conductive block.
Referring to fig. 10, fig. 10 is a third stacked schematic view of a partial structure of a display device according to an embodiment of the present application. The present application also provides a display device that also includes a first display area 220 and a second display area 240. The main differences between the display device in this embodiment and the above embodiments are:
the first display area 220 includes a first common electrode layer 282 and a first light emitting layer 286, the first common electrode layer 282 covers the first light emitting layer 286, and the first light emitting layer 286 includes a plurality of micro light emitting diodes 222.
The second display region 240 includes a second common electrode layer 284 and a second light emitting layer 288, the second common electrode layer 284 covers the second light emitting layer 288, the second light emitting layer 288 includes a plurality of organic light emitting diodes 242, and the thickness of the second common electrode layer 284 is greater than that of the first common electrode 282.
The first display area 220 further includes an auxiliary conductive portion 2824, the auxiliary conductive portion 2824 is disposed on a side of the first common electrode layer 282 away from the first light emitting layer 286, an orthogonal projection of the auxiliary conductive portion 2824 on the first light emitting layer 286 is located between the plurality of micro light emitting diodes 222, and the auxiliary conductive portion 2824 is electrically connected to the first common electrode layer 282.
The first common electrode layer 282 is fully paved on the whole first display area 220, the second common electrode layer 284 is fully paved on the whole second display area 240, the first common electrode layer 282 and the second common electrode layer 284 are conveniently manufactured, the auxiliary conducting part 2824 is additionally arranged on the first common electrode layer 282, the first common electrode layer 282 and the second common electrode layer are conveniently electrically connected, the contact area of the first common electrode layer and the second common electrode layer is large, and the contact performance is good and stable. The thickness of the first common electrode layer 282 is smaller than that of the second common electrode layer 284, the light transmittance of the first common electrode layer 282 is greater than that of the second common electrode layer 284, the auxiliary conductive part 2824 is disposed corresponding to the interval between the micro light emitting diodes 222, and the auxiliary conductive part 2824 combines with the first common electrode layer 282 to reduce the impedance of the whole body, so that the voltage drop of the voltages for driving the micro light emitting diodes 222 at different positions is reduced after the first common electrode layer 282 and the auxiliary conductive part 2824 are combined.
It should be noted that the material and/or structure of the first common electrode layer 282 may adopt the material and structure of the first conductive block in any of the above embodiments. The material and/or structure of the auxiliary conductive portion 2824 may adopt the material and structure of the auxiliary conductive portion in any of the above embodiments, and will not be described herein again.
Referring to fig. 11, fig. 11 is another schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device in this embodiment of the application may include a display device 20 and an optical sensor 30, and the display device 20 may be the display device 20 in any of the embodiments described above, which is not described herein again. The optical sensor 30 may be disposed opposite the first display area 220, and the optical sensor 30 is used to transmit an optical signal through the first display area 220.
The optical sensor 30 may be a camera, a lens of which faces the first substrate 221 of the first display area 220, and the camera is used for acquiring an external light signal transmitted through the first display area 220 to form an image. The optical sensor 30 may be at least one of a camera, a proximity sensor, a light sensor, a ranging sensor, a fingerprint recognition sensor, and the like. It should be noted that the camera corresponding to the first display area may be a front camera of the electronic device.
Referring to fig. 7, the first display area 220 includes an electrochromic block 228, the electrochromic block 228 is located on a side of the micro light emitting diode 222 away from the first substrate 221, and the electrochromic block 228 is disposed corresponding to the micro light emitting diode 222.
The processor 50 is further configured to control the electrochromic color block 228 to be in a colorless and transparent state when the first display area 220 displays an image; and is also used to control the electrochromic module 228 to display a first color when the optical sensor 30 is in operation, so as to block the light signal from the micro-leds 222. The first color may be a dark color such as black, dark blue, etc. The processor 50 may control the electrochromic block 228 to switch between a first color and a colorless and transparent state, and when the first display area 220 displays an image, the processor 50 may control the electrochromic block 228 to be the first color (e.g., black), so as to prevent light emitted by the micro light emitting diode 222 from being reflected after the light is irradiated to the first driving unit 224 or the interior, and thus the display effect is not affected. When the optical sensor 30 transmits a signal, the processor 50 may control the electrochromic color cell 228 to be colorless and transparent, which facilitates the optical sensor 30 to transmit and/or receive a light signal through the first display area 220. When the first display area 220 does not display an image and the optical sensor 30 does not transmit a signal, the processor 50 may control the electrochromic color cell 228 to be a first color (e.g., black) for shielding devices inside the display device 20.
The electrochromic block 228 may be provided slightly larger than the first driving unit 224 and the micro light emitting diodes 222, or may cover the entire layer.
Referring to fig. 12, fig. 12 is a schematic diagram of a fourth stacked structure of a first display area of a display device according to an embodiment of the present disclosure. The display device 20 includes an electrochromic layer 227 between the first substrate 221 and the micro light emitting diodes 222, and the electrochromic layer 227 covers the entire layer. When the first display area 220 displays an image, the processor 50 may control the electrochromic layer 227 to be a first color (e.g., black), so as to prevent light emitted by the micro light emitting diodes 222 from being reflected by the first driving unit 224 or the interior thereof, and affecting the display effect. When the optical sensor 30 transmits a signal, the processor 50 may control the electrochromic layer 227 to be colorless and transparent, which facilitates the optical sensor 30 to transmit and/or receive a light signal through the first display area 220. When the first display region 220 does not display an image and the optical sensor 30 does not transmit a signal, the processor 50 may control the electrochromic layer 227 to be a first color (e.g., black) for blocking devices inside the display device 20. It should be noted that in other embodiments, the electrochromic layer may also be located on a side of the first substrate facing away from the micro light emitting diode.
Referring to fig. 13, fig. 13 is a schematic diagram of a fifth stacked structure of a first display area of a display device according to an embodiment of the present application. The electrochromic layer 229 may also be located on the side of the micro light emitting diodes 222 facing away from the first substrate 221 (i.e. the optical sensor 30). When the first display area 220 displays an image, the processor 50 may control the electrochromic layer 229 to be colorless and transparent, so as to facilitate the light emitted from the micro light emitting diodes 222 to pass through and be displayed. When the optical sensor 30 transmits a signal, the processor 50 may control the electrochromic layer 229 to be colorless and transparent, so that the optical sensor 30 transmits and/or receives a light signal through the first display region 220. When the first display area 220 does not display an image and the optical sensor 30 does not transmit a signal, the processor 50 may control the electrochromic layer 229 to be a first color (e.g., black) for blocking the optical sensor 30 and devices inside the display device 20.
The processor can also directly send the image to be displayed to the two driving chips and the two display areas after image segmentation. Wherein, because the size of the micro light emitting diode is very small, the resolution of the first display area does not need to be reduced.
The display device may be of a regular shape, such as rectangular, rounded rectangular or circular. Of course, in some other possible embodiments, the display device may also have an irregular shape, which is not limited in this application.
One camera or a plurality of cameras can be arranged below the first display area. A plurality of cameras can be for the camera of mutually supporting, like two the same cameras, a ordinary camera and a blurring camera or black and white camera etc. first display area below can also set up other functional device except setting up the camera, like approaching optical sensor, light optical sensor, range finding optical sensor, fingerprint identification optical sensor etc..
For a more complete understanding of the electronic device of the embodiments of the present application. The structure of the electronic device is further explained below. With continued reference to fig. 1 or fig. 11, the electronic device 10 further includes a housing 40.
The housing 40 may include a rear cover (not shown) and a bezel 420, the bezel 420 being disposed around a periphery of the rear cover. The display device 20 may be disposed within the bezel 420, and the display device 20 and the rear cover may serve as opposing sides of the electronic device 10. The camera is disposed between the rear cover of the housing 40 and the display device 20.
The display device 20 may be a full-screen, i.e., substantially all of the display surface of the display device 20 is a display area. A cover plate may also be provided on the display device 20. The cover plate covers the display device 20 to protect the display device 20 from being scratched or damaged. Wherein the cover may be a clear glass cover so that a user may view the information displayed by the display device 20 through the cover. For example, the cover plate may be a sapphire cover plate.
The electronic device may further include a circuit board, a battery, and a midplane. Bezel 420 is disposed around the midplane, wherein bezel 420 and the midplane may form a middle frame of electronic device 10. The middle plate and the bezel 420 form a receiving cavity on each side of the middle plate, wherein one receiving cavity is used for receiving the display device 20, and the other receiving cavity is used for receiving a circuit board, a battery and other electronic elements or functional components of the electronic device 10.
The middle plate may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The middle frame is used for providing a supporting function for the electronic elements or functional components in the electronic device 10 so as to mount the electronic elements or functional components in the electronic device 10 together. Functional components of the electronic apparatus 10 such as a camera, a receiver, and a battery may be mounted on the center frame or the circuit board to be fixed. It is understood that the material of the middle frame may include metal or plastic.
The circuit board may be mounted on the middle frame. The circuit board may be a motherboard of the electronic device 10. One or more of functional components such as a microphone, a loudspeaker, a receiver, an earphone interface, an acceleration optical sensor, a gyroscope, a processor and the like can be integrated on the circuit board. Meanwhile, the display device 20 may be electrically connected to the circuit board to control the display of the display device 20 through a processor on the circuit board. The display device 20 and the camera may both be electrically connected to the processor; when the processor receives a shooting instruction, the processor controls the first display area to close display and controls the camera to acquire images through the first display area; when the processor does not receive the shooting instruction and receives the image display instruction, the processor can control the first display area and the second display area to jointly display the image.
The battery may be mounted on the middle frame. Meanwhile, the battery is electrically connected to the circuit board to enable the battery to power the electronic device 10. Wherein, the circuit board can be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery to the various electronic components in the electronic device 10.
It should be understood that reference herein to "a plurality" means two or more.
The display device and the electronic device provided in the embodiments of the present application are described in detail above. The principles and embodiments of the present application are described herein using specific examples, which are presented only to aid in the understanding of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A display device, characterized in that: the method comprises the following steps:
the first display area comprises a micro light-emitting diode and a first substrate, the micro light-emitting diode is arranged on the first substrate, the first display area also comprises an electrochromic block, the electrochromic block is positioned on one side of the micro light-emitting diode, which deviates from the first substrate, the electrochromic block is arranged corresponding to the micro light-emitting diode, the electrochromic block is slightly larger than the micro light-emitting diode, the first display area comprises a first public electrode layer, the first public electrode layer comprises an auxiliary conducting part and a plurality of first conducting blocks, the auxiliary conducting part is provided with a plurality of openings corresponding to the micro light-emitting diodes, one first conducting block is arranged in each opening, each first conducting block is adjacent to one micro light-emitting diode, and the auxiliary conducting part is electrically connected with the first conducting blocks, the light transmittance of the auxiliary conductive part is greater than that of the first conductive block, the resistivity of the auxiliary conductive part is smaller than that of the first conductive block, and the thickness of the auxiliary conductive part is greater than that of the first conductive block;
a second display area adjacent to the first display area, the second display area including an organic light emitting diode, the second display area including a second common electrode layer, the second common electrode layer including a plurality of second conductive blocks, the second conductive blocks having a thickness greater than that of the first conductive blocks;
the first driving chip is electrically connected with the first display area and is used for driving the micro light-emitting diode to display images; and
the second driving chip is electrically connected with the second display area and used for driving the organic light emitting diode to display images;
and the light transmittance of the first display area is greater than that of the second display area.
2. The display device according to claim 1, wherein the first display region further comprises a first driving unit for driving the micro light emitting diodes, the first driving unit is disposed between the first substrate and the micro light emitting diodes, and the micro light emitting diodes are disposed at least partially opposite to the first driving unit.
3. The display device according to claim 2, wherein the micro light emitting diode has a first orthographic projection on the first substrate, the first driving unit has a second orthographic projection on the first substrate, and one of the first orthographic projection and the second orthographic projection is located within the other.
4. The display device according to claim 2, wherein a light shielding block is disposed between the micro light emitting diode and the first driving unit, the light shielding block is at least partially disposed opposite to the first driving unit, and the light shielding block is configured to shield a light signal irradiated to the first driving unit.
5. The display device according to claim 2, wherein the electrochromic lite is configured to switch between displaying a first color and being clear-and-colorless, the electrochromic lite of the first color being configured to block light signals to the micro light-emitting diodes.
6. The display device according to claim 5, wherein the micro light emitting diode has a first orthographic projection on the first substrate, the first driving unit has a second orthographic projection on the first substrate, the electrochromic block has a fourth orthographic projection on the first substrate, and the first orthographic projection and the second orthographic projection are both within the fourth orthographic projection.
7. The display device according to claim 1, wherein the first driver chip and the second driver chip are located at opposite ends of the display device.
8. The display device according to claim 1, wherein a distribution density of the micro light emitting diodes of the first display region is not greater than a distribution density of the organic light emitting diodes of the second display region, and a maximum luminance per unit area of the first display region is not less than a maximum luminance per unit area of the second display region.
9. An electronic device, comprising:
a display device according to any one of claims 1 to 8;
the optical sensor is arranged opposite to the first display area and is used for transmitting an optical signal through the first display area.
10. The electronic device of claim 9, wherein the first display area further comprises an electrochromic block located on a side of the micro light emitting diode facing away from the first substrate, the electrochromic block being disposed corresponding to the micro light emitting diode;
the electronic equipment further comprises a processor, wherein the processor is used for controlling the electrochromic color blocks to be in a colorless and transparent state when the first display area displays images; and the optical sensor is also used for controlling the electrochromic block to display a first color when the optical sensor works so as to shield the optical signal irradiated to the micro light-emitting diode.
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| CN112490269A (en) * | 2020-11-26 | 2021-03-12 | Oppo广东移动通信有限公司 | Display assembly, flexible display assembly and display device |
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