Transflective liquid crystal display and manufacturing method thereof

A manufacturing method of a transflective liquid crystal display, comprising the following steps:

• Step S1:
• providing a first backing and forming, in sequence, a thin-film transistor (TFT) array layer and a color resist layer on the first backing;
• Step S2:
• forming a planarization layer on the color resist layer;
• Step S3:
• coating a black-photo-spacer (BPS) material layer on the planarization layer and using a first mask to subject the BPS material layer to a photolithographic operation to form a BPS light-shielding layer,
• wherein the BPS light-shielding layer comprises a black matrix and a main photo spacer and a sub photo spacer arranged on the black matrix and spaced from each other and the black matrix is provided, in a portion thereof other than portions in which the main photo spacer and the sub photo spacer are arranged, with a plurality of first bumps;
• Step S4:
• forming a pixel electrode on the planarization layer and forming a reflective electrode on the black matrix to cover the plurality of first bumps, wherein the reflective layer forms a plurality of convex faces on an upper surface thereof to respectively correspond to the first bumps and the reflective electrode is connected to the pixel electrode to form a lower substrate;
• and
• Step S5:
• providing an upper substrate, laminating the lower substrate and the upper substrate together, and positioning a liquid crystal layer between the upper substrate and the lower substrate,
• wherein the liquid crystal layer has a portion corresponding to the reflective electrode and having a thickness that is one half of a thickness of a portion thereof corresponding to the pixel electrode.

A transflective liquid crystal display, comprising:

• an upper substrate and a lower substrate that are arranged opposite to each other and a liquid crystal layer arranged between the upper substrate and the lower substrate;
• wherein the lower substrate comprises a first backing, a thin-film transistor (TFT) array layer arranged on the first backing, a color resist layer arranged on the TFT array layer, a planarization layer covering the color resist layer, a black-photo-spacer (BPS) light-shielding layer arranged on the planarization layer, a pixel electrode arranged on the planarization layer, and a reflective electrode arranged on the BPS light-shielding layer;
• the BPS light-shielding layer comprises a black matrix and a main photo spacer and a sub photo spacer arranged on the black matrix and spaced from each other, wherein the black matrix is provided, in a portion thereof other than portions in which the main photo spacer and the sub photo spacer are arranged, with a plurality of first bumps;
• the reflective electrode is arranged on the black matrix and covers the plurality of first bumps so as to form a plurality of convex faces on an upper surface thereof;
• and the reflective electrode is connected to the pixel electrode;
• and
• the liquid crystal layer has a portion corresponding to the reflective electrode and having a thickness that is one half of a thickness of a portion thereof corresponding to the pixel electrode;
• wherein the planarization layer is provided with a plurality of second bumps such that the black matrix is formed with the plurality of first bumps that respectively correspond to the plurality of second bumps;
• further comprising an upper polarizer plate arranged on one side of the upper substrate that is distant from the lower substrate, a lower polarizer plate arranged on one side of the lower substrate that is distant from the upper substrate, and two quarter-wave plates respectively arranged between the upper substrate and the upper polarizer plate and between the low substrate and the lower polarizer plate;
• wherein the upper polarizer plate has an optical axis that is parallel to an axis of the lower polarizer plate;
• and
• wherein the transflective liquid crystal display further comprises a backlight module arranged on one side of the lower polarizer plate that is distant from the lower substrate;
• wherein the upper substrate comprises a second backing and a common electrode arranged on one side of the second backing that is adjacent to the lower substrate;
• and
• wherein the reflective electrode is formed of a material comprising aluminum or silver.