A novel Black Photo Spacer (BPS) structure is demonstrated in this present work. The black BPS material supports the substitution of black matix (BM) to realize shading function. Thus the BPS technology can integrate BM into PS process, which saves the material, mask, machine and time cost. In order to improve stability, we use full tone mask design. Different height (ΔH) of Main PS and Sub PS are generated by color filter stacking. Polymer film on array (PFA) is used to reduce the excessive primary height between Main PS and Sub PS. In addition, all the patterns included color filter, BM and PS are on array side, which can effectively avoid the backlight leakage and enhance contrast ratio (CR). More discussions of the designs, process and optical performances about 1‐tone BPS such as Data line BM less (DBS) are demonstrated in this paper, and a 28 inch demon with this BPS technology is shown at the end.
We present a LCD demon with Black Photo Spacer (BPS) technology which is a wide potential technology to save cost in the emerging LCD industry. The BPS can reduce the step of process by merging the BM and PS process. Besides, with designing BM/PS (BPS) on array in this technology, it is suitable to satisfy curved and flat panel on the same time with sharing one layout. In this paper we discussed the designs and process controls on the triple type BPS, and then we studied the optical performances about the AA and border areas. At the end a demon with BPS technology was demonstrated.
Author keywordsBPS; process saving; curved display Late-News Poster P-225/ / M. Liu SID 2017 DIGEST • 1567
In this work we propose a super Fringe-Field Switching (FFS) structure in which groove is formed between electrodes. With groove structure, both the threshold voltage V th and operation voltage V op of LCD display decrease by about 0.5 V. These improvements make great contribution to the power consumption of driving circuit and LCD panel.
A novel Black Photo Spacer (BPS) structure is demonstrated. Using the BPS technology BM (Black Mask) can be integrated into the PS. which saves material, mask, machine and time cost. To improve stability, we use a full tone mask design. A 28‐inch display using BPS technology is demonstrated.
The novel polymer-stabilized vertical alignment (PSVA) pixel structure was fabricated by gray tone mask (GTM) technology.With the GTM technology, one mask is reduced and the process is simplified. The influence of process parameters on groove structure have been researched in detail.
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