Patent Publication Number: US-2023152636-A1

Title: Display panel and display device

Description:
FIELD OF INVENTION 
     The present disclosure relates to a field of display technologies, and more particularly to a display panel and a display device. 
     BACKGROUND OF INVENTION 
     Chiral compounds are added to negative nematic host liquid crystals in chiral vertically-aligned liquid crystal display device, so that the liquid crystal molecules reversibly switch between a vertical orientation state (dark state) and a planar twist state (bright state) to suppress color dispersion, reduce dark lines between domains effectively, and improve transmittance. In order to meet the maximum requirement of the transmittance, an optical path difference of the chiral liquid crystal molecules is large, which causes the display device to be prone to the problems of color shift in viewing angles and narrow viewing angles. 
     SUMMARY OF INVENTION 
     Technical Problems 
     Embodiments of the present disclosure provide a display panel and a display device, which can solve the problems of color shift in viewing angles and narrow viewing angles. 
     An embodiment of the present disclosure provides a display panel, comprising: 
     a plurality of first electrodes positioned in a same pixel unit, wherein the first electrodes comprise a first sub-electrode and a second sub-electrode, and a light wavelength transmittance of the first sub-electrode is different from a light wavelength transmittance of the second sub-electrode. 
     In the display panel, the first sub-electrode comprises a first main electrode and a plurality of first branched electrodes connected to the first main electrode, a first included angle is formed between the first branched electrodes and the first main electrode; the second sub-electrode comprises a second main electrode and a plurality of second branched electrodes connected to the second main electrode, and a second included angle are formed between the second branched electrodes and the second main electrode; wherein the first included angle is different from the second included angle. 
     In the display panel, the first included angle is equal to θ±α; the second included angle is equal to θ; wherein θ is the best included angle when the display panel has the best transmittance, and α is an angle margin. 
     In the display panel, the first sub-electrode comprises a first domain and a second domain that are adjacent to each other, a third included angle formed between the first branched electrode and the first main electrode within the first domain, and a fourth included angle formed between the first branched electrode within the second domain and the first branched electrode within the first domain; wherein the third included angle is equal to the first angle. 
     In the display panel, the fourth included angle is equal to 90°; or the fourth included angle is equal to 90°±2α; or the fourth included angle is equal to 180° minus twice the first angle. 
     In the display panel, the first sub-electrode comprises a third domain and a fourth domain that are adjacent to each other, the third domain and the second domain are positioned in a same column, the fourth domain and the first domain are positioned in a same column, an included angle between the first branched electrode and the first main electrode within the third domain is equal to the third included angle, and an included angle between the first branched electrode and the first main electrode within the fourth domain is equal to an included angle between the first branched electrode and the first main electrode within the second domain. 
     In the display panel, the second sub-electrode comprises a first domain and a second domain that are adjacent to each other, a fifth included angle formed between the second branched electrode and the second main electrode within the first domain, and a sixth included angle formed between the second sub-electrode within the second domain and the second sub-electrode within the first domain; wherein the fifth included angle is equal to the second included angle. 
     In the display panel, the sixth included angle is equal to 90°. 
     In the display panel, the second sub-electrode comprises a third domain and a fourth domain that are adjacent to each other, the third domain and the second domain are positioned in a same column, the fourth domain and the first domain are positioned in a same column, an included angle between the second branched electrode and the second main electrode within the third domain is equal to the fifth included angle, and an included angle between the second branched electrode and the second main electrode within the fourth domain is equal to an included angle between the second branched electrode and the second main electrode within the second domain. 
     In the display panel, the first electrodes comprise a third sub-electrode, the third sub-electrode comprises a third main electrode and a plurality of third branched electrodes connected to the third main electrode, and the third branched electrodes and the third main electrode comprises a seventh included angle, the seventh included angle is equal to θ±γ, wherein 0°≤γ≤10°. 
     In the display panel, the third sub-electrode comprises a first domain and a second domain that are adjacent to each other and a third domain and a fourth domain that are adjacent to each other, the third domain and the second domain are positioned within a same column, the fourth domain and the first domain are positioned in a same column, an eighth included angle is formed between the third branched electrodes and the third main electrode within the first domain, the eighth included angle is equal to θ, a ninth included angle is formed between the third branched electrode within the second domain and the third branched electrode within the first domain, the ninth angle is equal to 90°, an included angle between the third branched electrodes and the third main electrode within the third domain is equal to the eighth angle, an included angle between the third branched electrodes and the third main electrode within the fourth domain is equal to an included angle between the third branched electrodes and the third main electrode within the second domain. 
     In the display panel, 0°≤θ≤30°, or 60°≤θ≤90°; and 0°&lt;α≤10°. 
     In the display panel, the first included angle is equal to θ and the second included angle is equal to θ±β; wherein θ is the best angle when the display panel has the best transmittance, and β is an angle margin. 
     In the display panel, the first included angle is equal to θ±α and the second included angle is equal to θ±β; wherein θ is the best angle when the display panel has the best transmittance, and a and β are angle margins. 
     In the display panel, the display panel is a liquid crystal display panel, the display panel further comprises: 
     a first substrate, wherein the first electrode is positioned on a side of the first substrate; 
     a second substrate positioned opposite to the first substrate and maintaining a first distance from the first substrate; 
     a liquid crystal positioned between the first substrate and the second substrate, and a twist angle of the liquid crystal is greater than or equal to 50° and less than or equal to 90°. 
     In the display panel, the first distance is greater than or equal to 2 micrometers and less than or equal to 5 micrometers. 
     In the display panel, a pitch of the liquid crystal is greater than or equal to 5 micrometers and less than or equal to 25 micrometers. 
     The present disclosure further provides a display device, comprising a display panel, wherein the display panel comprises: 
     a plurality of first electrodes positioned in a same pixel unit, the first electrodes comprising a first sub-electrode and a second sub-electrode, and a light wavelength transmittance of the first sub-electrode is different from a light wavelength transmittance of the second sub-electrode. 
     In the display panel, the first sub-electrode comprises a first main electrode and a plurality of first branched electrodes connected to the first main electrode, a first included angle is formed between the first branched electrodes and the first main electrode; the second sub-electrode comprises a second main electrode and a plurality of second branched electrodes connected to the second main electrode, and a second included angle are formed between the second branched electrodes and the second main electrode; wherein the first included angle is different from the second included angle. 
     In the display panel, the first included angle is equal to θ±α; the second included angle is equal to θ; wherein θ is the best included angle when the display panel has the best transmittance, and α is an angle margin. 
     Beneficial effects: 
     Compared with the prior art, for a display panel and a display device provided by the embodiments of the present disclosure, the display panel includes a plurality of first electrodes positioned in a same pixel unit. The first electrodes include a first sub-electrode and a second sub-electrode. A light wavelength transmittance of a first sub-electrode is different from a light wavelength transmittance of a second sub-electrode, so as to increase a viewing angle of the display panel and solve a problem that the display panel is prone to having color shifts. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG.  1    is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure. 
         FIGS.  2 A- 2 B  are schematic structural diagrams of a first electrode provided by an embodiment of the present disclosure. 
         FIGS.  3 A- 3 E  are schematic structural diagrams of a first sub-electrode provided by an embodiment of the present disclosure. 
         FIGS.  3 F- 3 G  are schematic structural diagrams of second sub-electrodes provided by an embodiment of the present disclosure. 
         FIG.  3 H  is a schematic structural diagram of a third sub-electrode provided by an embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     In order to make purposes, technical solutions, and effects of the application to be clearer and more specific, the present disclosure is further described with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are only used to explain the present disclosure, and are not intended to limit the present disclosure. 
     Specifically, please refer to  FIG.  1   , which is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure.  FIGS.  2 A to  2 B  which are schematic structural diagrams of a first electrode provided by an embodiment of the present disclosure. The display panel includes the following: 
     a plurality of first electrodes  100  positioned in a same pixel unit. The first electrodes  100  comprise a first sub-electrode  101  and a second sub-electrode  102 . A light wavelength transmittance of the first sub-electrode  101  is different from a light wavelength transmittance of the second sub-electrode  102 , which broadens the viewing angle of the display panel and solves the problem that the display panel is prone to having color shift. 
     Specifically, the first sub-electrode  101  includes a first main electrode  1011  and a plurality of first branched electrode  1012  connected to the first main electrode  1011 . The first branched electrode  1012  and the first main electrode  1011  has a first angle θ1. The second sub-electrode  102  includes a second main electrode  1021  and a plurality of second branched electrodes  1022  connected to the second main electrode  1021 . A second included angle θ2 is formed between the second branched electrode  1022  and the second main electrode  1021 . The first angle θ1 is different from the second included angle θ2, so that a difference is formed between a transmittance of light wavelength of the first sub-electrode  101  and a transmittance of light wavelength of the second sub-electrode  102 , thereby solving problems of the viewing angle and color shift of the display panel. 
     Furthermore, a first included angle θ1 is equal to θ±α. A second included angle θ2 is equal to θ. θ is an optimal included angle when the display panel has the best transmittance. α is an angle margin to reduce an optical path difference of the first sub-electrode  101 , thereby solving the viewing angle and color shift of the display panel. 
     In which 0°≤θ≤30°; or 60°≤θ≤90°; and θ°&lt;α≤10°. Specifically, θ=0°, 3°, 5°, 8°, 10°, 15°, 19°, 20°, 23°, 25°, 27°, or 30°; or 0=60°, 62°, 65°, 67°, 69°, 70°, 75°, 79°, 80°, 83°, 85°, 88°, or 90°. Specifically, α=1°, 2°, 3°, 5°, 7°, 9°, or 10°. 
     Similarly, the first included angle θ1 is equal to θ and the second included angle θ2 is equal to θ±β, so that a difference is formed between a transmittance of light wavelength of the first sub-electrode  101  and a transmittance of light wavelength of the second sub-electrode  102 . Furthermore, the first included angle θ1 is equal to θ±α and the second included angle θ2 is equal to θ-43, so that a difference is formed between a transmittance of light wavelength of the first sub-electrode  101  and a transmittance of light wavelength of the second sub-electrode  102 . β is an angle margin and 0°&lt;β≥10°. Specifically, β=1°, 2°, 3°, 5°, 7°, 9°, or 10°. 
     Please continue to refer to  FIGS.  2 A- 2 B . The first electrodes  100  further includes a third sub-electrode  103 . The third sub-electrode  103  includes a third main electrode  1031  and a plurality of third branched electrodes  1032  connected to the third main electrode  1031 . A seventh included angle θ7 is formed between the third branched electrode  1032  and the third main electrode  1031 . The seventh included angle θ7 is equal to θ±γ, where 0°≤γ≤10°, and γ is an angle margin. Specifically, γ=0°, 2°, 3°, 5°, 7°, 9°, or 10°. 
     Furthermore, when the first included angle θ1 of the first sub-electrode  101  and/or the second included angle θ2 of the second sub-electrode  102  are different from the optimal included angle θ, the seventh included angle θ7 of the third sub-electrode  103  may be equal to the optimal included angle θ, so that a difference is formed between the transmittances of the light wavelength of the first sub-electrode  101 , the second sub-electrode  102 , and the third sub-electrode  103 . That is, an included angle between at least one branched electrode and the main electrode of the sub-electrode of the first electrode  100  is different from the optimal included angle θ, so that the optical path difference is reduced, thereby solving problems of the viewing angle and color shift of the display panel. 
     Specifically, when the first included angle θ1 is equal to θ and the second included angle θ2 is equal to θ±β; or when the first included angle θ1 is equal to θ±α, the second included angle θ2 is equal to θ; or when the first included angle θ1 is equal to θ±α and the second included angle θ2 is equal to θ-4. The seventh included angle θ7 may be equal to the optimal included angle θ. 
     Similarly, the seventh included angle θ7 of the third sub-electrode  103  may be equal to the first included angle θ1 of the first sub-electrode  101 ; or the seven included angle θ7 of the third sub-electrode  103  may be equal to the second included angle θ2 of the second sub-electrode  102 . Furthermore, the first included angle θ1 is equal to θ±α, the second included angle θ2 is equal to θ-43, and the seventh included angle θ7 is equal to θ±γ. 
     The first sub-electrode  101 , the second sub-electrode  102 , and the third sub-electrode  103  are used for forming a red sub-pixel, a green sub-pixel, and a blue sub-pixel. In practical applications, a brightness of the blue sub-pixel will be higher than a brightness of the red and green sub-pixels, so the sub-electrode forming the blue sub-pixel may have an included angle different from the optimal included angle θ to increase the viewing angle and solve the color swift. That is, if the first sub-electrode  101  forms a blue sub-pixel, the second sub-electrode  102 , and the third sub-electrode  103  form a red sub-pixel and a green sub-pixel, the first included angle θ1 is equal to θ±α, the second included angle θ2 is equal to θ, the seventh included angle θ7 is equal to θ, so the sub-electrode forming the blue sub-pixel may have an included angle different from the optimal included angle θ to increase the viewing angle and solve the color swift. When the optimal included angle θ=75°, and the angle margin α=5°, the first included angle θ1 is equal to 70° or 80°, the second included angle θ2 is equal to θ and equal to 75°, and the seventh included angle θ7 is equal to θ and equal to 75°, so that the first electrode  100  of the pixel unit has a higher difference in light wavelength transmittance, thereby increasing viewing angles and solving color swifts. 
     Understandably, the first electrode  100  may further include a plurality of sub-electrodes such as a fourth sub-electrode and a fifth sub-electrode. The arrangement of the sub-electrodes is similar to the arrangement of the first sub-electrode  101 , the second sub-electrode  102 , and the third sub-electrode  103 , which are not described in detail herein. 
     In the first electrode  100  shown in  FIG.  2 A  is described as a structure in which the first sub-electrode  101 , the second sub-electrode  102 , and the third sub-electrode  103  are served as a single-domain. In the actual application, the first electrode  100  will also employ a multi-domain design to increase the viewing angle and solve the color shift. Specifically, please continue to refer to  FIGS.  2 B and  3 A- 3 H ,  FIGS.  3 A- 3 E  are schematic structural diagrams of the first sub-electrode provided by the embodiment of the present disclosure.  FIGS.  3 F- 3 G  are schematic structural diagrams of second sub-electrodes provided by an embodiment of the present disclosure.  FIG.  3 H  is a schematic structural diagram of a third sub-electrode provided by an embodiment of the present disclosure. 
     Please continue to refer to  FIGS.  3 A- 3 E , the first sub-electrode  101  includes adjacent first domains  101   a  and second domains  101   b . The first branched electrode  1012   a  and the first main electrode  1011  has a third included angle θ3. The first branched electrode  1012   b  within the second domain  101   b  and the first branched electrode  1012   b  within the first domain  101   a  have a fourth included angle θ4. In which, the third included angle θ3 is equal to the first included angle θ1, so that the first sub-electrode  101  has different light wavelength transmittances in the first domain  101   a  and the second domain  101   b , thereby increasing viewing angles and solving color swifts. 
     The first main electrode  1011  includes first main electrodes  1011   a  and  1011   b  that are arranged crosswise. The third included angle θ3 is an included angle between the first branched electrode  1012   a  and the first main electrode  1011   a  within the first domain  101   a.    
     Furthermore, when the third included angle θ3 is equal to the first included angle θ1 and equal to θ±α, the fourth included angle θ4 is equal to 90°; or the fourth included angle θ4 is equal to 90°±2a; or the fourth included angle θ4 is equal to 180° minus 2 times the first included angle θ1. 
     Similarly, when the third included angle θ3 is equal to the first included angle θ1 and equal to θ, the fourth included angle θ4 is equal to 90°, so that the third included angle θ3 of the first domain  101   a  is different from the fourth included angle θ4, so that the first sub-electrode  101  has different light wavelength transmittances in the first domain  101   a  and the second domain  101   b.    
     Furthermore, the first sub-electrode  101  includes adjacent third domains  101   c  and fourth domains  101   d . The third domain  101   c  and the second domain  101   b  are positioned in the same column. The fourth domain  101   d  and the first domain  101   a  is positioned in the same column. An included angle between the first branched electrode  1012   c  and the first main electrode  1011   a  within the third domain  101   c  is equal to the third included angle θ3. An included angle between the first branched electrode  1012   d  and the first main electrode  1011   a  within the second domain  101   d  is equal to an included angle between the first branched electrode  1012   b  and the first main electrode  1011   a  within the second domain  101   b.    
       FIG.  3 A  is a schematic structural view of the first sub-electrode  101  designed as two domains, and  FIGS.  3 B to  3 E  are schematic structural views of the first sub-electrode  101  designed for four domains. In the first sub-electrode  101  shown in  FIGS.  3 B to  3 D , the third included angle θ3 is equal to the first included angle θ1 is equal to θ±α. The fourth included angle θ4 is equal to 90°, as shown in  3 B. The fourth angle θ4 is equal to 90°±2α, as shown in  FIG.  3 C . The fourth angle θ4 is equal to 180° minus 2 times the first angle θ1, as shown in  FIG.  3 D . In the first sub-electrode  101  shown in  FIG.  3 E , the third included angle θ3 is equal to the first included angle θ1 and equal to θ, and the fourth included angle θ4 is equal to 90°. 
     Furthermore, an included angle between the first branched electrode  1012  and the first main electrode  1011  in at least one domain of the first sub-electrode  101  is different from the optimal included angle θ, so that the first sub-electrode  101  has different light wavelength transmittance in each domain. 
     Please continue to refer to  FIGS.  3 F- 3 G , the second sub-electrode  102  includes an adjacent first domain  102   a  and a second domain  102   b . The second branched electrode  1022   a  and the second main electrode  1021  within the first domain  102   a  has a fifth included angle θ5. The second branched electrode  1022   b  within the second domain  102   b  and the second branched electrode  1022   a  within the first domain  102   a  have a sixth included angle θ6. The fifth included angle θ5 is equal to the second included angle θ2. 
     The second main electrode  1021  includes second main electrodes  1021   a  and  1021   b  that are arranged crosswise. The fifth included angle θ5 is an included angle between the second branched electrode  1022   a  and the second main electrode  1021   a  within the first domain  102   a.    
     Furthermore, when the fifth included angle θ5 is equal to the second included angle θ2 and equal to θ±β; the sixth included angle θ6 is equal to 90°; or the sixth included angle θ6 is equal to 90°±2β; or the sixth included angle θ6 is equal to 180° minus 2 times the second included angle θ2. 
     Similarly, when the fifth included angle θ5 is equal to the second included angle θ2 and equal to θ, the sixth included angle θ6 is equal to 90°, so that the fifth included angle θ5 within the first domain  102   a  is different from the sixth included angle θ6, so that the second sub-electrode  102  has different light wavelength transmittances in the first domain  102   a  and the second domain  102   b.    
     Furthermore, the second sub-electrode  102  includes adjacent third domains  102   c  and fourth domains  102   d . The third domains  102   c  and the second domains  102   b  are positioned in the same column. The fourth domains  102   d  and the first domain  102   a  are positioned in the same column. An included angle between the second branched electrode  1022   c  and the second main electrode  1021   a  within the third domain  102   c  is equal to the fifth included angle θ5. An included angle between the second branched electrode  1022   d  and the second main electrode  1021   a  within the fourth domain  102   d  is equal to an included angle between the second branched electrode  1022   b  and the second main electrode  1021   a  within the second domain  102   b , as shown in  FIG.  3 G . 
     Understandably, in the case that both the first sub-electrode  101  and the second sub-electrode  102  have multiple domains, the included angle between the first branched electrode  1012  and the first main electrode  1011  within at least one domain of the first sub-electrode  101  is different from an included angle between the second branched electrode  1022  and the second main electrode  1021  within at least one domain in the second sub-electrode  102 . A transmittance of the light wavelength of the first sub-electrode  101  is different from a transmittance of the light wavelength of the second sub-electrode  102 . 
     Furthermore, the included angle between the first branched electrode  1012  and the first main electrode  1011  within at least one domain of the first sub-electrode  101  is different from the optimal included angle θ; and/or the included angle between the second branched electrode  1022  and the second main electrode  1021  within at least one domain of the second sub-electrode  102  is different from the optimal included angle θ to reduce the optical path difference, increase the viewing angle of the display panel, and solve the color shift problem of the display panel. 
     Please continue to refer to  FIG.  3 H , the third sub-electrode  103  includes a first domain  103   a  and a second domain  103   b  that are adjacent to each other, and a third domain  103   c  and a fourth domain  103   d  that are adjacent to each other. The third domain  103   c  and the second domain  103   b  are positioned in the same column. The fourth domain  103   d  and the first domain  103   a  are positioned in the same column. The third branched electrode  1032   a  and the third main electrode  1031  within the first domain  103   a  has an eighth included angle θ8. The eighth included angle θ8 is equal to θ. The third branched electrode  1032   b  within the second domain  103   b  and the third branched electrode  1032   a  within the first domain  103   a  have a ninth included angle θ9. The ninth included angle θ9 is equal to 90°. An included angle between the third branched electrode  1032   c  and the third main electrode  1031  within the third domain  103   c  is equal to the eighth included angle θ8. An included angle between the third branched electrode  1032   d  and the third main electrode  1032   d  within the fourth domain  103   d  is equal to an included angle between the third branched electrode  1032   b  and the third main electrode  1031  within the second domain  103   b.    
     The third main electrode  1031  includes a plurality of main electrodes  1031   a  and  1031   b  that are arranged crosswise. The eighth angle θ8 is an included angle between the third branched electrode  1032   a  and the third main electrode  103  within the first domain  103   a.    
     Similar to the case where the first sub-electrode  101  and the second sub-electrode  102  have multiple domains, in the third sub-electrode  103 , the eighth included angle θ8 may also be equal to the seventh included angle θ7. That is, when the eighth included angle θ8 is equal to the seventh included angle θ7 and equal to θ±γ, the ninth included angle θ9 is equal to 90°; or the ninth included angle θ9 is equal to 90°±2γ; or the ninth included angle θ9 is equal to 180° minus 2 times the seventh included angle θ7. Similarly, when the eighth included angle θ8 is equal to the seventh included angle θ7 and equal to θ, the nine included angle θ9 is equal to 90°, so that the eighth included angle θ8 within the first domain  103   a  is different from the seventh included angle θ7, so that the third sub-electrode  102  have different transmittances of light wavelength in the first domain  103   a  and the second domain  103   b.    
     Understandably, in the case that the first sub-electrode  101 , the second sub-electrode  102 , and the third sub-electrode  103  all have multiple domains, when the included angle between the first branched electrode  1012  and the first main electrode  1011  within at least one domain of the first sub-electrode  101  is different from the included angle between the second branched electrode  1022  and the second main electrode  1021  within at least one domain of the second sub-electrode  102 , an included angle between the third branched electrode  1032  of the third branched electrode  1032  and the third main electrode  1031  may be equal to an included angle between the first branched electrode  1012  of the first sub-electrode  101  and the first main electrode  1011 ; or an included angle between the third branched electrode  1032  and the third main electrode  1031  of the third sub-electrode  103  is equal to an included angle between the second branched electrode  1022  of the second branched electrode  1022 , so that the transmittance of the light wavelength of the first sub-electrode  101  is different from the transmittance of the light wavelength of the second sub-electrode  102 . 
     Similarly, the included angle between the third branched electrode  1032  and the third main electrode  1011  within at least one domain of the third sub-electrode  103  is different from the included angle between the first branched electrode  1012  and the first main electrode  1011  within at least one domain of the first sub-electrode  101 , and is different from the included angle between the second branched electrode  1022  and the second main electrode  1021  within at least one domain of the second sub-electrode  102 . The third sub-electrode  103  has a different transmittance of light wavelength from the transmittances of light wavelength of the first sub-electrode  101  and the second sub-electrode  102 . 
     The included angle between the first branched electrode  1012  and the first main electrode  1011  within the first sub-electrode  101  may be equal to the included angle between the second branched electrode  1022  and the second main electrode  1021  of the second sub-electrode  102 . The included angle between the first branched electrode  1012  and the first main electrode  1011  of the first sub-electrode  101  may not be equal to the included angle between the second branched electrode  1022  and the second main electrode  1021  of the second sub-electrode  102 . 
     Furthermore, the included angle between the first branched electrode  1012  and the first main electrode  1011  within at least one domain of the first sub-electrode  101  is different from the optimal included angle θ; and/or the included angle between the second branched electrode  1022  and the second main electrode  1021  within at least one domain of the second sub-electrode  102 ; and/or the included angle between the third branched electrode  1032  and the third main electrode  1031  within at least one domain of the three sub-electrodes  103  is different from the optimal included angle θ. Both can reduce the optical path difference and increase viewing angle of the display panel and solve color shift problem of the display panel. 
     The first sub-electrode  101 , the second sub-electrode  102 , and the third sub-electrode  103  can be formed using a same photomask. There may be no difference between layer thicknesses between the first sub-electrode  101 , the second sub-electrode  102 , and the third sub-electrodes  103  in order to save manufacturing process and cost. 
     Please continue to refer to  FIG.  1   , the display panel is a liquid crystal display panel, and the display panel further includes the following: 
     a first substrate  104 , wherein the first electrode  100  is positioned on one side of the first substrate  104 ; 
     a second substrate  105  disposed opposite to the first substrate  104  and maintains a first distance d from the first substrate  104 ; and 
     liquid crystals  106  positioned between the first substrate  104  and the second substrate  105 , and a twist angle of the liquid crystals  106  are greater than or equal to 50° and less than or equal to 90°. 
     The liquid crystals  106  are doped with a chiral agent to improve the transmittance of the display panel. The first distance d is greater than or equal to 2 micrometers and less than or equal to 5 micrometers. A pitch p of the liquid crystal  106  is greater than or equal to 5 micrometers and less than or equal to 25 micrometers. The optical path difference Δ nd of the liquid crystals  106  is greater than or equal to 300 nm and is less than or equal to 600 nm to ensure that a twist angle of the liquid crystal  106  is greater than or equal to 50° and less than or equal to 90°. 
     Furthermore, the first distance d is greater than or equal to 2.8 micrometers and less than or equal to 4 micrometers. The pitch p of the liquid crystal  106  is greater than or equal to 10 micrometers and is less than or equal to 20 micrometers. The optical path difference Δ nd of the liquid crystal  106  is greater than or equal to 400 nm and less than or equal to 500 nm. 
     The liquid crystal  106  is injected between the first substrate  104  and the second substrate  105  by inkjet printing, etc. After the first substrate  104  and the second substrate  105  are bonded to form a liquid crystal cell, polymer stabilized vertivally alignment (PSVA) is employed to process the liquid crystal cell, in order to form a pre-tilt angle for the liquid crystal  106  to obtain the display panel. The PSVA processes refer to irradiating the liquid crystal cell with ultraviolet light under a charged condition, so that the liquid crystal  106  is reversed in a certain direction. Ultraviolet light irradiation is employed to polymerize the polymerizable monomer of the liquid crystals  106  to form a certain pretilt angle. 
     The first substrate  104  is one of an array substrate or a color filter substrate. The second substrate  105  is one of the array substrate or a color filter substrate different from the first substrate  104 . Furthermore, the first substrate  104  is an array substrate. The second substrate  105  is a color film substrate. 
     Furthermore, the first substrate  104  includes a substrate  1041 . The first substrate  1041  is positioned on a side of the first electrode  100  away from the liquid crystal  106 . The substrate  101  includes a rigid substrate and a flexible substrate. Furthermore, the first substrate  104  further includes a thin-film transistor, an alignment layer, and other unshown portions. The second substrate  105  further includes a second substrate  1051 , a second electrode  1052  positioned on the second substrate  1051  close to the liquid crystal  106 , an alignment layer, and other unshown portions. 
     The display panel further includes a sealant  107  between the first substrate  104  and the second substrate  105 ; a first polarizer  108  positioned on a side of the first substrate  104  away from the second substrate  105 ; and a second polarizer  109  positioned on a side of the second substrate  105  away from the first substrate  104 . Furthermore, a polarization axis of the first polarizer  108  coincides with the first main electrode  1011   a . The polarization axis of the second polarizer  109  coincides with the first main electrode  1011   b , so that the transmittance of the display panel is maximized. 
     The present disclosure also provides a display device, including the display panel. 
     The display device further includes a touch panel which is coupled with the display panel in a built-in or plug-in manner to achieve touch function of the display device. 
     A display panel and a display device provided by embodiments of the present disclosure. The display panel includes a plurality of first electrodes  100  positioned in a same pixel unit, a plurality of first electrodes  100  including a first sub-electrode  101  and a second sub-electrode  102 . The transmittance of light wavelength of the first sub-electrode  101  is different from the transmittance of light wavelength of the second sub-electrode  102 , so as to increase the viewing angle of the display panel and solve the problem that the display panel is prone to having color swift. 
     In the above embodiments, description of each embodiment has its own emphasis. For the part that is not detailed in an embodiment, please refer to the related descriptions of other embodiments. 
     The display panel and the display device provided by the embodiments of the present disclosure are described in detail hereabove. Specific examples are used to explain the principle and implementation of the present disclosure. The descriptions of the above embodiments are only used for understanding technical solutions and core ideas of the present disclosure. People with ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. These modifications or replacements do not make the principle of the corresponding technical solutions to be depart from the scope of the technical solutions of the embodiments of the present disclosure.