Coplanar electrode surface site selection surface discharge plasma body display screen

Abstract

The invention relates to a unit structure of a color plasma display screen, belonging to the technical field of flat panel display. The purpose of the present invention is to propose a color PDP display pixel unit structure, display electrodes and address electrodes are done on the same level, so these electrode patterns can be processed simultaneously to further improve the consistency of the existing color PDP display unit structure, The consistency of the electrical characteristics of the display unit reduces the cost of the color PDP circuit, reduces the cost of the color PDP display screen, and improves the luminous efficiency of the display screen. The surface discharge plasma display screen with coplanar electrode surface selection has a front plate composed of a front substrate, a display electrode, an address electrode, a transparent medium, and a magnesium oxide layer, and a rear plate composed of a rear substrate, barrier walls, and phosphor powder. In the effective display working area, the display electrodes and the address electrodes are on the same level.

Description

technical field [0001] The invention relates to a display pixel unit structure of a color plasma display screen, and belongs to the technical field of flat panel display. Background technique [0002] The color plasma display (Plasma Display Panel, referred to as PDP) uses gas discharge to generate vacuum ultraviolet light (VUV) to excite three primary color phosphors to generate red, green and blue three primary color light, and then realizes color image display through space and time modulation . [0003] There are three types of PDP: AC, DC, and AC-DC. Among them, the application prospect of AC PDP (ACPDP) is the most valuable, so the research on ACPDP, especially the research on color ACPDP is very active. In the process of ACPDP research, the following unit structures mainly appeared: [0004] 1. Opposite site selection and opposite discharge monochrome ACPDP; [0005] 2. Opposite site selection, opposite discharge transmissive color ACPDP; [0006] 3. Two-electrode...

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Problems solved by technology

[0016] 6. Due to the characteristics of gas discharge and the need for optical isolation of the light emitting unit, PDP is not suitable for small screen display

[0023] 1. The inconsistency of the display unit structure makes its electrical characteristics inconsistent. In order to make the whole screen work normally, higher performance requirements will be put forward for the drive circuit and address selection circuit, thus increasing the production cost of the circuit

[0024] 2. In order to ensure the consistency of the unit structure, the manufacturing accuracy of the front and rear substrates has higher requirements, thus increasing the production cost of the display screen

[0025] 3. Since the electrodes are on the front and rear substrates respectively, the unit characteristics can only be determined after the two substrates are sealed, which is not convenient for process quality control

[0026] 4. The inconsistency of the unit structure makes the photoelectric characteristics of the display unit inconsistent and affects the image quality

When making electrodes on different layers, due to the limitation of alignment accuracy and the sintering deformation of the substrate, the consistency of the pixel unit structure is affected to a certain extent; since the address selection electrode and the display electrode are not on the same layer, dielectric insulation is required, which increases the selection process. The thickness of the medium on the surface of the address electrode will increase the address voltage; because there is too much overlap between the address electrode and the display electrode, the capacitance between the electrodes is increased, which affects the generation of the circuit waveform; too much overlap between the address electrode and the display electrode It also affects the transmission of light, making it difficult to apply reflective working methods

[0028] Therefore, the existing color PDP structure has inherent factors of poor consistency, resulting in high production costs of display screens and circuits.

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