Patent Publication Number: US-2022231093-A1

Title: Display panel and display apparatus

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/CN2021/082771, filed on Mar. 24, 2021, which claims priority to Chinese Patent Application No. 202010307757.0, filed on Apr. 17, 2020, both of which are hereby incorporated by reference in their entireties. 
    
    
     TECHNICAL FIELD 
     The present application relates to the field of display technology, and in particular to a display panel and a display apparatus. 
     BACKGROUND 
     With the rapid development of electronic devices, the requirements of users on screen-to-body proportions become higher and higher. Thus, full-screen electronic devices are receiving more and more attention in the industry. 
     Electronic devices such as cell phones, tablets and the like need to integrate components such as front cameras, earpieces, and infrared sensing elements, and thus the light transmittance of the corresponding areas need to be increased. For this reason, more and more manufacturers have improved a structure of a display panel of the electronic device corresponding to the components such as the front cameras, which can meet the photosensitive requirements of the front camera and other components to a certain extent, but make the display panels have defects of non-uniform display. 
     Therefore, there is a need for a new display panel and a new display apparatus. 
     SUMMARY 
     Embodiments of the present application provide a display panel and a display apparatus, which can meet the photosensitive requirements of devices such as a front camera and can improve display uniformity of the display panel at the same time. 
     In an aspect, the embodiments of the present application provide a display panel including a first display area, a second display area, and a transitional display area located between the first display area and the second display area, a light transmittance of the first display area being greater than a light transmittance of the second display area, wherein the display panel includes: 
     a plurality of first sub-pixels arranged in the first display area; a plurality of second sub-pixels arranged in the transitional display area; a plurality of first pixel driving circuits arranged in the transitional display area and configured to drive the first sub-pixels and the second sub-pixels; a plurality of blocks arranged in the first display area and corresponding to at least a part of the plurality of first sub-pixels. 
     In another aspect, the embodiments of the present application provide a display apparatus including the display panel described above. 
     According to the display panel and the display apparatus provided in the embodiments of the present application, the display panel has the first display area, the second display area and the transitional display area located between the first display area and the second display area. The light transmittance of the first display area is greater than the light transmittance of the second display area. In actual practice, components such as a front camera can be arranged under the first display area, so that not only the full-screen display requirements of the display panel can be satisfied, but also the photosensitive requirements of the components such as the camera arranged under the first display area can be satisfied because the greater light transmittance of the first display region. 
     The display panel includes the first sub-pixels and the blocks located in the first display area as well as the second sub-pixels and the first pixel driving circuits located in the transitional display area. Therefore, the first sub-pixels located in the first display area and the second sub-pixels located in the transitional display area can be driven through the first pixel driving circuits, and at the same time, the distribution pattern of the blocks arranged in the first display area can be made similar to the distribution pattern of the first pixel driving circuits arranged in the transitional display area due to the arrangement of the blocks. The uniformity of the distribution pattern of the first pixel driving circuits arranged in the transitional display area which is adjacent to the first display area is improved, thereby ensuring the display uniformity of the display panel. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Features, advantages, and technical effects of an exemplary embodiments of the present application will be described below with reference to the accompanying drawings. 
         FIG. 1  is a schematic structural diagram of a top view of a display panel according to an embodiment of the present application. 
         FIG. 2  is a schematic partial enlarged view of the region Q in  FIG. 1 . 
         FIG. 3  is a schematic structural diagram of a cross-sectional view along the direction M-M in  FIG. 2 . 
         FIG. 4  is a schematic structural diagram of a partial cross-sectional view of a display panel according to another embodiment of the present application. 
         FIG. 5  is a schematic structural diagram of a partial cross-sectional view of a display panel according to yet another embodiment of the present application. 
         FIG. 6  is a schematic structural diagram of a partial cross-sectional view of a display panel according to yet another embodiment of the present application. 
         FIG. 7  is a schematic structural diagram of a top view of a display apparatus according to an embodiment of the present application. 
         FIG. 8  is a schematic structural diagram of a partial cross-sectional view along the W-W direction in  FIG. 7 . 
     
    
    
     DETAILED DESCRIPTION 
     Features of various aspects and exemplary embodiments of the present application will be described in detail below. In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that, the specific embodiments described herein are only configured for explaining the present application, and not configured for limiting the present application. For those skilled in the art, the present application can be implemented without some of those specific details. The following description of the embodiment is only for providing a better understanding of the present application by showing examples of the present application. 
     It is to be noted that relational terms such as first, second, and the like are used herein solely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations. Moreover, the terms “include”, “including”, or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements does not include only those elements but may include other elements not explicitly listed or inherent to such process, method, article or device. An element preceded by “include . . . ” does not, without more constraints, preclude the existence of additional identical elements in the process, method, article or device that includes the element. 
     It will be understood that, in describing the structure of a component, when one layer or one region is referred to as being “on” or “above” another layer or another region, it means that the one layer or the one region is directly on the another layer or another region, or there are other layers or regions between the one layer or the one region and the another layer or the another region. In addition, if the component is turned upside-down, the one layer or the one region will be “under” or “below” the another layer or the another region. 
     In electronic devices such as mobile phones and tablets, photosensitive components (e.g., front cameras, infrared light sensors, and proximity light sensors) are required to be integrated on a side where a display panel is provided. In some embodiments, light-transmitting display areas may be provided on the above-mentioned electronic devices, and the photosensitive components may be arranged on the back of the light-transmitting display areas, so that full-screen display of the electronic devices can be realized with the normal operation of the photosensitive components being ensured. 
     In order to reduce the amount of wiring in the light-transmitting display area, the pixel driving circuits corresponding to the light-transmitting display area are usually arranged in a transitional display area located at the periphery of the light-transmitting display area. However, as the pixel structure or wiring position of the light-transmitting display area changes, there will be an edge effect in the manufacture process of the display panel, which is mainly embodied in that the pattern and characteristics of the pixel driving circuits of the transitional display area adjacent to the edge of the light-transmitting display area are different from those of the pixel driving circuits in other areas, causing non-uniform display. 
     Therefore, in order to solve the above-mentioned technical problems, the embodiments of the present application provide a display panel and a display apparatus. The display panel and the display apparatus in the embodiments of the present application are described in detail below with reference to  FIG. 1  to  FIG. 8 . 
     As shown in  FIG. 1  and  FIG. 3 , the embodiments of the present application provide a display panel  1 . The display panel  1  may be an organic light emitting diode (OLED) display panel. 
     The display panel  1  has a first display area AA 1 , a second display area AA 3 , and a transitional display area AA 2  located between the first display area AA 1  and the second display area AA 3 . A light transmittance of the first display area AA 1  is greater than a light transmittance of the second display area AA 3 . 
     Optionally, the light transmittance of the first display area AA 1  is greater than or equal to 15%, or even greater than 40%, or even higher. For this reason, in one or more embodiments of the present application, the light transmittance of each of functional film layers of the display panel  1  is greater than 80%, and the light transmittance of at least some of the functional film layers is even greater than 90%. 
     According to the embodiments of the present application, the light transmittance of the first display area AA 1  of the display panel  1  is greater than the light transmittance of the second display area AA 3 , so that in the display panel  1 , photosensitive components can be integrated on the back side of the first display area AA 1 , achieving the under-screen integration of a photosensitive component  2  such as a camera. At the same time, the first display area AA 1  can display images, which increases the display area of the display panel  1  and realizes a full-screen design of the display apparatus. 
     In an optional implementation, the display panel  1  includes a plurality of first sub-pixels  10 , a plurality of second sub-pixels  20 , a plurality of first pixel driving circuits  30 , and a plurality of blocks  40 . The plurality of first sub-pixels  10  are arranged in the first display area AA 1 , and the plurality of second sub-pixels  20  are arranged in the transitional display area AA 2 . The plurality of first pixel driving circuits  30  are arranged in the transitional display area AA 2  and configured to drive the first sub-pixels  10  and the second sub-pixels  20 . The plurality of blocks  40  are arranged in the first display area AA 1  and corresponding to at least a part of the plurality of first sub-pixels  10 . 
     In the display panel  1  according to the embodiments of the present application, the first pixel driving circuits  30  are arranged in the transitional display area AA 2  and configured to control the first sub-pixels  10  and the second sub-pixels  20 , so that the display functions of the first sub-pixels  10  and the second sub-pixels  20  can be effectively ensured. In addition, the wiring in the first display area AA 1  can be reduced and the light transmittance of the first display area AA 1  can be improved, so that the requirements for under-screen integration of the components such as cameras can be satisfied. Further, the blocks  40  arranged in the first display area AA 1  make the distribution pattern (or in other words, the distribution pattern of the devices) in the first display area AA 1  be similar to the distribution pattern of the first pixel driving circuits  30  arranged in the transitional display area AA 2 , which improves the uniformity of the pattern of the first pixel driving circuits  30  in the transitional display area AA 2  adjacent to the first display area AA 1 , thereby improving the display uniformity of the display panel  1 . 
     In some optional embodiments, the plurality of first pixel driving circuits  30  of the display panel are distributed in a first density. The plurality of blocks  40  are distributed in a second density. The first density is equal to or greater than the second density. With the above arrangement, it can be ensured that the density of the distribution pattern of the first pixel driving circuits  30  located in the transitional display area AA 2  tends to be consistent with the density of the distribution pattern in other areas (especially the first display area AA 1 ), which improves the uniformity of the distribution pattern of the first pixel driving circuits  30  and ensures good display effect. 
     In an optional implementation, in the display panel  1  according to the embodiments of the present application, each of the first sub-pixels  10  adjacent to the plurality of second sub-pixels  20  in the transitional display area AA 2  corresponds to at least one block  40 . Since the first pixel driving circuits  30  configured to drive the first sub-pixels  10  in the first display area AA 1  are arranged in the transitional display area AA 2 , edge effects are likely to occur at the edge of the transitional display area AA 2  close to the first display area AA 1 . Therefore, by making each of the first sub-pixels  10  adjacent to the second sub-pixels  20  in the transitional display area AA 2  correspond to at least one block  40 , the difference between the distribution pattern of the first pixel driving circuits  30  in the transitional display area AA 2  and the distribution pattern in the first display area AA 1  which is adjacent to the transitional display area AA 2  can be effectively reduced, thereby optimizing the edge effect occurring in the transitional display area AA 2  and ensuring good display effect. 
     It should be noted that, each of the first sub-pixels  10  adjacent to the second sub-pixels  20  in the transitional display area AA 2  as mentioned in the above embodiments refers to all first sub-pixels  10  arranged directly on one side of the second sub-pixels  20  without other sub-pixels being arranged between the first sub-pixel  10  and the second sub-pixels  20 . 
     For example, as shown in  FIG. 2 , a column of first sub-pixels  10  within a dotted line box are arranged on one side of corresponding second sub-pixels  20 , and there is no other sub-pixels being arranged between the column of first sub-pixels  10  and the corresponding second sub-pixels  20 . The column of first sub-pixels  10  are arranged adjacent to the second sub-pixels  20  in the transitional display area AA 2  and each of the first sub-pixels  10  is corresponding to at least one block  40 . In addition, in order to be clear in the drawings, in  FIG. 2 , as an example, only one first sub-pixel  10  in the first display area AA 1  is illustrated as being connected with the first pixel driving circuit  30  in the transitional display area AA 2 . The other first pixel driving circuits  30  configured to drive the first sub-pixels  10  may be arranged in the transitional display area AA 2  according to specific requirements, the other first pixel driving circuits  30  may be located in a blank area between adjacent second sub-pixels  20  and may also be located below corresponding second sub-pixels  20 , as long as the driving requirements can be satisfied. Not all arrangements of the first pixel driving circuits  30  are shown in the figures. 
     As shown in  FIG. 2  and  FIG. 3 , in some optional embodiments, in the display panel  1  according to the embodiments of the present application, the number of the plurality of blocks  40  may be equal to the number of the plurality of the first sub-pixels  10 , and the plurality of blocks  40  are arranged in a one-to-one correspondence with the plurality of the first sub-pixels  10 . With the above arrangement, the difference between the distribution pattern of the first pixel driving circuits  30  in the transitional display area AA 2  and the distribution pattern in the first display area AA 1  which is adjacent to the transitional display area AA 2  can be effectively reduced, which improves the uniformity of the distribution pattern of the first pixel driving circuits  30 , and thus improves the uniformity of the characteristics of the first pixel driving circuits  30 . 
     In an optional implementation, in the display panel  1  provided by the embodiments described above, each of the first sub-pixels  10  includes a first electrode  11 , a first light-emitting element  12  located on the first electrode  11 , and a second electrode  13  located on the first light-emitting element  12 . The first electrode  11  is connected to the first pixel driving circuit  30 . The first pixel driving circuit  30  can drive a connected first sub-pixel  10 . In an arrangement direction X of the first electrode  11  and the second electrode  13 , an orthographic projection of each block  40  is covered by an orthographic projection of the first electrode  11 . 
     With the above arrangement, the reduction of the difference between the distribution pattern of the first pixel driving circuits  30  in the transitional display area AA 2  and the distribution pattern of the adjacent area and the effective improvement of the uniformity of the pattern distribution of the first pixel driving circuits  30  can be ensured, and at the same time, the diffraction of light in the first display area AA 1  will not be affected by the blocks  40 . The light transmission requirements of first display area AA 1  can be satisfied, and thus the photosensitive requirements of components such the front camera can be satisfied. 
     In an optional implementation, in the display panel  1  according to the embodiments of the present application, in the arrangement direction X of the first electrode  11  and the second electrode  13 , the orthographic projection of each block  40  is completely covered by the orthographic projection of the corresponding first electrode  11 . 
     In some optional embodiments, in the display panel  1  provided by the embodiments of the present application, each of the second sub-pixels  20  includes a third electrode  21 , a second light-emitting element  22  located on the third electrode  21 , and a fourth electrode  23  located on the second light-emitting element  22 . The third electrode  21  is connected to the first pixel driving circuit  30 . The first pixel driving circuit  30  can drive a connected second sub-pixel  20 . 
     In some optional embodiments, the first electrode  11  and third electrode  21  are anodes, and the second electrode  13  and fourth electrode  23  are cathodes. 
     In an optional implementation, in order to reduce the number of first pixel driving circuits  30  and ensure that the light transmittance of the transitional display area AA 2  is between that of the first display area AA 1  and that of the second display area AA 3 , optionally, first electrodes  11  of the first sub-pixels  10  of a same color among the plurality of first sub-pixels  10  may be electrically interconnected and are driven by one first pixel driving circuit  30 . Optionally, third electrodes  21  of the second sub-pixels  20  of a same color among the plurality of second sub-pixels  20  may be electrically interconnected and are driven by one first pixel driving circuit  30 . With the above arrangement, the number of first pixel driving circuits  30  can be effectively reduced, and at the same time, the wiring in the first display area AA 1  and the transitional display area AA 2  can be reduced, thereby better ensuring that the requirements of the light transmittance of the first display area AA 1  can be satisfied. 
     In some optional embodiments, in the display panel  1  provided by the embodiments of the present application, the blocks  40  may be made of a conductive material or a non-conductive material. Optionally, the blocks  40  may be made of a metallic material or a non-metallic material. Optionally, the blocks  40  may be a non-transparent structure, of which the shape may be set as desired, as long as the requirement that the difference between the distribution pattern of the first pixel driving circuits  30  in the transitional display area AA 2  and the distribution pattern of the adjacent area being reduced can be better met. 
     In an optional implementation, in the display panel  1  provided by the above embodiments, the first pixel driving circuit  30  has a plurality of transistors and a plurality of capacitors. Optionally, the first pixel driving circuit  30  includes a semiconductor layer  31 , a first metal layer  32 , a second metal layer  33 , a third metal layer  34  and an interlayer insulating layer. The blocks  40  are provided in a same layer as at least one of the semiconductor layer  31 , the first metal layer  32 , the second metal layer  33 , the third metal layer  34  and the interlayer insulating layer. With the above arrangement, the molding of the block  40  can be facilitated, the molding process of the display panel  1  can be effectively simplified, and the influence on the driving and display performance of the display panel  1  can be avoided. 
     Optionally, the interlayer insulating layer includes a first interlayer insulation layer  35  (also referred to as a gate insulation layer), a second interlayer insulation layer  36  and a third interlayer insulation layer  37 . The first interlayer insulation layer  35  is arranged as covering the semiconductor layer  31 , the second interlayer insulation layer  36  is arranged as covering the first metal layer  32 , and the third interlayer insulation layer  37  is arranged as covering the second metal layer  33 . 
     In some optional embodiments, in the molding process of the display panel  1 , the plurality of blocks  40  may be arranged in a same layer as the semiconductor layer  31 . That is, when molding an active region of a transistor at a corresponding position of the transitional display area AA 2 , a structure consistent with the material of the active region may be simultaneously molded at a corresponding region of each first sub-pixel  10  in the first display area AA 1 , so as to form the block  40  mentioned in the above embodiments of the present application. Therefore, the molding requirements of the blocks  40  can be satisfied without additional a molding process for the display panel  1 . Optionally, the shape of the block  40  can be consistent with the shape of the corresponding active region of the transistor. 
     In some other embodiments, as shown in  FIG. 4 , in the molding process of the display panel  1 , a plurality of blocks  40  may be arranged in a same layer as the first metal layer  32  of the first pixel driving circuit  30 . That is, when molding the first metal layer  32  at a corresponding position of the transitional display area AA 2 , for example, when molding a gate electrode of the transistor, a structure consistent with the material of the gate electrode may be molded simultaneously in a corresponding area of each first sub-pixel  10  in the first display area AA 1 , so as to form the block  40  mentioned in the above embodiments of the present application. The molding requirements of the block  40  can be satisfied without additional molding process for the display panel  1 . Optionally, the shape of the block  40  may be consistent with the shape of the corresponding gate electrode. 
     As shown in  FIG. 5 , in some other examples, in the molding process of the display panel  1 , a plurality of blocks  40  may be arranged in a same layer as an inter-layer Dielectric (ILD). Optionally, the blocks  40  may be specifically arranged in a same layer as the first interlayer insulation layer  35 , the second interlayer insulation layer  36 , or the third interlayer insulation layer  37 . For the ease of understanding, the blocks  40  are illustrated as being in the same layer as the third interlayer insulation layer  37 . In the molding process of the display panel  1 , after the third interlayer insulation layer  37  is molded in the first display area AA 1 , the transitional display area AA 2  and the second display area AA 3 , a plurality of hole-shaped slots may be formed in the third interlayer insulation layer  37  located in the first display area AA 1  by a process such as etching, and then the material is filled in the corresponding hole-shaped slots by a process such as evaporation and deposition, so as to mold the plurality of blocks  40 . The requirements of the blocks  40  can also be met. 
     It will be appreciated that the above arrangements of the blocks  40  being in the same layer as the semiconductor layer  31 , the first metal layer  32  or the third interlayer insulation layer  37  of the first pixel driving circuit  30  is illustrative for a better understanding of the display panel  1  provided by the embodiments of the present application, which are three optional embodiments, and the arrangements of the blocks  40  are not limited to the above embodiments. In some other examples, the plurality of blocks  40  may be arranged in the same layer as at least one of the second metal layer  33 , the third metal layer  34 , the first interlayer insulation layer  35  and the second interlayer insulation layer  36 , which are not detailed herein. For example, the blocks may be arranged in the same layer as the first interlayer insulation layer  35 , the second interlayer insulation layer  36  and the third interlayer insulation layer  37  at the same time, which also can meet the performance requirements of the display panel  1 . 
     According to some embodiment of the present application, the plurality of blocks  40  being arranged in the same layer as the at least one layer of the first pixel driving circuit  30  are merely some optional implementations. As shown in  FIG. 6 , in still other examples, the structure of the block  40  may be made to be a transistor structure, for example, the structure of the block  40  may be the same as any transistor structure included in the first pixel driving circuit  30 . This arrangement can also achieve the same effect, so that the density of the distribution pattern of the first pixel driving circuits  30  in the transitional display area AA 2  which is adjacent to the edge of the first display area AA 1  region is similar to the density of the distribution pattern in other regions, which can improve the uniformity of the distribution pattern of the first pixel driving circuits  30 , and thus improve the characteristic uniformity of the first pixel driving circuits  30 . 
     In an optional implementation, in the display panel  1  provided by the above embodiments, the plurality of blocks  40  are arranged in rows and columns. With the above arrangement, the uniformity of the characteristics of the first pixel driving circuits  30  can be improved. At the same time, the molding of the block  40  can be facilitated, and in an arrangement direction of the first electrode  11  and the second electrode  13 , an orthographic projection of each of the blocks  40  can be easily covered by an orthographic projection of the first electrode  11  of the corresponding first sub-pixel  10 , which reduces or avoids the influence of the block  40  on the light in the first display area AA 1 . 
     In an optional implementation, the display panel  1  provided by the above embodiments further includes a plurality of third sub-pixels  50  arranged in the second display area AA 3 . The plurality of third sub-pixels  50  are distributed in a third density. The plurality of first sub-pixels  10  are distributed in a fourth density. The third density is greater than the fourth density. With the above arrangement, the requirement of the light transmittance that the light transmittance of the first display area AA 1  is greater than the light transmittance of the second display area AA 3  can be better achieved. 
     In an optional implementation, as shown in  FIG. 2  to  FIG. 6 , the display panel  1  provided by the above embodiments further includes a plurality of second pixel driving circuits  60  distributed in the second display area AA 3 . The second pixel driving circuits  60  are configured to drive the third sub-pixels  50 . With the above arrangement, the display requirements of the second display area AA 3  can be better met. At the same time, the density of the distribution pattern of the first pixel driving circuits  30  in the transitional display area AA 2  which is adjacent to the edge of the first display area AA 1  can be made similar to the density of the distribution pattern of other regions such as the first display area AA 1  and the second display area AA 2 , so that the display effect of the display panel  1  is optimized. 
     In some optional embodiments, at least one of the first pixel driving circuit  30  and the second pixel driving circuit  60  may be any one of a  2 T 1 C circuit, a  7 T 1 C circuit, a  7 T 2 C circuit, or a  9 T 1 C circuit. Herein, the “2T 1 C circuit” refers to a pixel circuit including two transistors (T) and one capacitor (C) therein, and the “ 7 T 1 C circuit”, “ 7 T 2 C circuit”, “ 9 T 1 C circuit” are formed in a similar manner. 
     The display panel  1  provided in the embodiments of the present application has the first display area AA 1 , the second display area AA 3  and the transitional display area AA 2  located between the first display area AA 1  and the second display area AA 3 . The light transmittance of the first display area AA 1  is greater than the light transmittance of the second display area AA 3 . Therefore, in actual practice, components such as the front camera can be arranged under the first display area AA 1 , so that not only the full-screen display requirements of the display panel  1  can be satisfied, but also the photosensitive requirements of the components such as the camera can be satisfied due to a higher light transmittance of the first display area AA 1 . 
     The display panel  1  includes the first sub-pixels  10  and the blocks  40  located in the first display area AA 1  as well as the second sub-pixels  20  and the first pixel driving circuits  30  located in the transitional display area AA 2 . Therefore, the first sub-pixels  30  located in the first display area AA 1  and the second sub-pixels  20  located in the transitional display area AA 2  can be driven through the first pixel driving circuits  30 , and at the same time, the distribution pattern of the blocks  40  arranged in the first display area AA 1  can be made similar to the distribution pattern of the first pixel driving circuits  30  arranged in the transitional display area AA 2  through the arrangement of the blocks  40 . The uniformity of the distribution pattern of the first pixel driving circuits  30  in the transitional display area AA 2  which is adjacent to the first display area AA 1  is improved, thereby ensuring the display uniformity of the display panel  1 . 
     In an optional apparatus, the embodiments of the present application further provide a display apparatus including the display panel  1  according to any of the above embodiments. The display panel  1  has the first display area AA 1 , the transitional display area AA 2 , and the second display area AA 3 . The light transmittance of the first display area AA 1  is greater than the light transmittance of the second display area AA 3 . The display panel  1  includes a first surface S 1  and a second surface S 2  opposite to each other. The first surface S 1  is a display surface. The display apparatus further include a photosensitive component  2 . The photosensitive component  2  is located on the side of the display panel  1  where the second surface S 2  is located. The photosensitive component  2  is corresponding to the position of the first display area AA 1 . 
     The photosensitive component  2  may be an image capture apparatus for capturing external image information. In the embodiments, the photosensitive component  2  may be a complementary metal oxide semiconductor (CMOS) image capture apparatus. In some other embodiments, the photosensitive component  2  may be a charge-coupled device (CCD) image capturing apparatus or other form of image capturing apparatus. The photosensitive component  2  may not be limited to an image capturing apparatus. For example, in some embodiments, the photosensitive component  2  may be a light sensor such as an infrared sensor, a proximity sensor, an infrared lens, a flood sensing element, an ambient light sensor, and a dot matrix projector. In addition, in the display apparatus, other components may further be integrated on the second surface of the display panel, such as an earpiece, a speaker, etc. 
     In the display apparatus according to the present application, the light transmittance of the first display area AA 1  is greater than the light transmittance of the second display area AA 3 , so that in the display panel  100 , the photosensitive component  2  can be integrated on the back side of the first display area AA 1 , achieving the under-screen integration of the photosensitive component  2  such as a camera. At the same time, the first display area AA 1  can display images, which increases the display area of the display panel  1  and realizes a full-screen design of the display apparatus. 
     The display panel  1  includes the first sub-pixels  10  and the blocks  40  located in the first display area AA 1  as well as the second sub-pixels  20  and the first pixel driving circuits  30  located in the transitional display area AA 2 . Therefore, the first sub-pixels  30  located in the first display area AA 1  and the second sub-pixels  20  located in the transitional display area AA 2  can be driven through the first pixel driving circuits  30 , and at the same time, the distribution pattern of the blocks  40  arranged in the first display area AA 1  can be made similar to the distribution pattern of the first pixel driving circuits  30  arranged in the transitional display area AA 2  through the arrangement of the blocks  40 . The uniformity of the distribution pattern of the first pixel driving circuits  30  in the transitional display area AA 2  which is adjacent to the first display area AA 1  is improved, thereby ensuring the display uniformity of the display apparatus. 
     Although the present application has been described with reference to the preferred embodiments, various modifications may be made thereto and components thereof may be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in the embodiments can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, instead, it includes all technical solutions that fall within the scope of the claims.