Liquid crystal display monitors are made of

Options

A. Monocrystals
B. Single crystals
C. Liquid crystals
D. Polycrystals

Answer

To answer the question "Liquid crystal display monitors are made of," we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding Liquid Crystal Displays (LCDs)**:
- LCDs are a type of flat-panel display technology that utilizes liquid crystals to modulate light. They are commonly used in monitors, televisions, and other display devices.

2. **Analyzing the Options**:
- **Option 1: Monocrystals** - These are single crystal structures, which are not typically used in LCD technology.
- **Option 2: Single Crystals** - Similar to monocrystals, these are also not the primary component of LCDs.
- **Option 3: Liquid Crystals** - This is the key component of LCD technology. Liquid crystals can change their orientation when an electric field is applied, allowing them to control light passage.
- **Option 4: Polycrystals** - These are made up of many small crystals and are not the main material used in LCDs.

3. **Identifying the Correct Answer**:
- Based on the analysis, the correct answer is **Option 3: Liquid Crystals**. LCDs consist of liquid crystals that are activated by electric current to display images.

### Final Answer:
Liquid crystal display monitors are made of **liquid crystals**.