A polarizer and a display device

Abstract

A polarizer is disclosed and it is used in combination with a reflection layer. The polarizer comprises a polarizing layer (702) and a compensation layer (704). The compensation layer (704) is disposed between the polarizing layer (702) and the reflection layer. Accordingly, a display device comprising the polarizer is also disclosed. The polarizer solves the problem of oblique light leakage of OLED displays.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a polarizer and a display device comprising the polarizer. Background technique [0002] OLED (Organic Light-Emitting Diode, organic light-emitting diode) display, also known as organic electroluminescence display, is an emerging flat-panel display device, due to its simple preparation process, low cost, low power consumption, high luminous brightness, Wide range of working temperature, light and thin size, fast response speed, easy to realize color display and large-screen display, easy to realize matching with integrated circuit driver, easy to realize flexible display, etc., so it has broad application prospects. [0003] Such as figure 1 As shown, a display device in an OLED display generally includes a base substrate 1, a semiconductor layer 2 (also referred to as an ITO layer) and an electrode layer 6 disposed on the base substrate in sequence, and an electrode layer 6 di...

AI Technical Summary

Problems solved by technology

[0009] like Image 6 As shown, when the external ambient light is incident on the circular polarizer along the direction with the azimuth angle of 0° and the polar angle of about 60°, that is, when viewed from an oblique direction of the circular polarizer, the direction of the transmission axis of the polarizer There is no deflection, and it is still perpendicular to the intersection of the positive direction of the S1 axis and the circumference, while the direction of the optical axis 703A of the quarter-wave plate is deflected. In this case, the light incident on the circular polarizer is reflected by the electrode layer and passes through the The circular polarizer cannot be completely absorbed, resulting in light leakage; according to the symmetry of the optical structure, when the azimuth angles are 90°, 180° and 270°, light leakage will also occur

[0010] like Figure 7 As shown, when the external ambient light is incident on the circular polarizer along the direction of the azimuth angle of 45° and the polar angle of about 60°, that is, when viewed from another oblique direction of the circular polarizer, the quarter wave plate The direction of the optical axis 703A is not deflected, and still coincides with the S2 axis, while the direction of the transmission axis of the polarizing layer is deflected, that is, the transmission axis of the polarizing layer is still perpendicular to point A, but point A has changed from the S1 axis The intersection of the positive direction and the circumference deviates, which will also cause light leakage in this case; according to the symmetry of the optical structure, when the azimuth angles are 135°, 225° and 315°, light leakage will also occur

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